Prediction of sound-absorbing performance of micro-perforated panels using the transfer matrix method

Z. Tao, B. Zhang, D. W. Herrin, A. F. Seybert

Research output: Contribution to journalConference articlepeer-review

15 Scopus citations


Micro-perforated panels have tiny pores which attenuate sound based on the Helmholtz resonance principle. That being the case, an appropriate cavity depth should be chosen to fully capitalize on the attenuation potential of the panel. Generally, the panel's sound absorbing performance can be predicted by Maa's theory given information about the panel and the cavity depth. However, in some cases, one cannot use the theory to predict the panel's performance precisely, especially when the micro-perforate has varying diameters and/or irregular hole shapes. In these cases, the sound-absorbing performance of the micro-perforate is different from that of a uniform pore diameter perforate. This paper presents an alternative method to predict the micro-perforated panel's performance precisely. As a first step, the transfer impedance of the micro-perforate should be measured. Then, the transfer matrix method is employed to predict the sound-absorbing performance of a single panel or system of panels. It is demonstrated that the suggested approach can predict the performance very accurately.

Original languageEnglish
JournalSAE Technical Papers
StatePublished - 2005
EventSAE 2005 Noise and Vibration Conference and Exhibition - Traverse City, MI, United States
Duration: May 16 2005May 19 2005

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


Dive into the research topics of 'Prediction of sound-absorbing performance of micro-perforated panels using the transfer matrix method'. Together they form a unique fingerprint.

Cite this