Research Article | OPEN ACCESS
Performance Testing for Sound Absorption Coefficient by Using Impedance Tube
J. Niresh, S. Neelakrishnan, S. Subharani and R. Prabhakaran
PSG College of Technology, Coimbatore, India
Research Journal of Applied Sciences, Engineering and Technology 2015 2:185-189
Received: April 19, 2015 | Accepted: May 10, 2015 | Published: September 15, 2015
Abstract
The sound absorption characteristics of the single and multi layered porous materials are studied with the help of impedance tube. In Impedance tube standing wave and transfer function methods are used more for its accuracy and reliability. The standing wave method is simple and transfer function method is accurate. The materials are tested for its sound absorption co-efficient. The standing wave method is used in this study. The results are compared with the existing tube. The two different samples are compared with existing tube. The results are analyzed.
Keywords:
Coefficient, standing wave, transfer function,
References
- ASTM Standard E1050-98, 1998. Standard Test Method for Impedance and Absorption of Acoustical Material Using a Tube, Two Microphones and a Digital Frequency Analysis System. ASTM.
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CrossRef
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CrossRef
- Scott, R.A., 1945. The absorption of sound in a homogenous porous medium. IOP Sci., 58(2): 113-124.
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CrossRef
- Zwikker, C. and C.W. Kosten, 1949. Sound Absorbing Materials. Elsevier Publishing Inc., New York.
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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