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 well-known equations for microperforated panels. It is shown that the normal incident sound absorption can be measured with a given depth, and then an effective perforation diameter and porosity can be determined via a least squares curve fit. The effective parameters can then be used to predict the sound absorptive performance for different cavity depths as well as the transmission loss through a single layer and two layers of fabric.
|State||Published - 2018|
|Event||47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018 - Chicago, United States|
Duration: Aug 26 2018 → Aug 29 2018
|Conference||47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018|
|Period||8/26/18 → 8/29/18|
Bibliographical noteFunding Information:
The authors gratefully acknowledge the support of the Vibro-Acoustics Consortium for this work.
© INTER-NOISE 2018 - 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering. All rights reserved.
ASJC Scopus subject areas
- Acoustics and Ultrasonics