Development of Impedance Tube to Measure Sound Absorption Coefficient
S. S. Bhattacharya1, D. V. Bihola2
1Prof. (Dr.) S. S. Bhattacharya, Textile Engineering Department, The M. S. University, Baroda, India.
2D. V. Bihola, PhD Student of Textile Engineering, The M. S. University, Baroda, India., presently working as Assistant Prof. Textile Technology, L.D. College of engineering, Ahmedabad, India.
Manuscript received on July 20, 2019. | Revised Manuscript received on August 10, 2019. | Manuscript published on August 30, 2019. | PP: 3212-3218 | Volume-8 Issue-6, August 2019. | Retrieval Number: F8818088619/2019©BEIESP | DOI: 10.35940/ijeat.F8818.088619
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: An acoustic property of textile material can be measured using an impedance tube, is the most popular technique to measure normal sound absorption and transmission loss. This method consuming less time and a very small sample is required to assess the acoustic properties of the materials. Unfortunately, the cost of the impedance tube and software used for measurement is very high. This paper gives information about how to develop a cost-effective impedance tube suitable for researchers. The design, development, and fabrication of the impedance tube suitable for different frequencies with technical details are present here. Information related to some software which can be used to measure sound absorption coefficient also provided. To validate the testing results obtained from custom-build impedance tube, same samples were tested on commercially available impedance tube at PSG College, Coimbatore. It was observed that both the instruments provide almost same results, no statistically significant difference found in results. Base on the results design of customized impedance tube recommends to student and researcher interested in measuring acoustic properties of textile material.
Keywords: Acoustic, Impedance tube, Sound absorption transmission loss, Nonwoven, Sound absorption coefficient.