Acta Mechanica Slovaca 2020, 24(2):56-64 | DOI: 10.21496/ams.2020.010

Impedance Tube as a Tool for Evaluating Acoustic Noise Descriptors - The Experimental Measurement of Acoustic Parameters

Veronika Gumanová1, Laura Džuňová1, Lýdia Sobotová1, Ružena Králiková1
1 TUKE, Faculty of Mechanical Engineering, Department of Process and Environmental Engineering, Park Komenského 5, 042 00 Košice

Against the background of severe problems related to environmental noise, there has been a significant increase in the demand for its controlling. It has led to an increase in research efforts to develop the correct ways of measuring acoustic descriptors with the closely related research of soundproof and highly sound absorptive building materials. The sound insulation capacity of a barrier is indicated by two acoustic parameters - sound absorption and transmission loss. The contribution describes the principle, methods, and process of measurement of acoustics parameters using an impedance tube, explains the notion of sound absorption and transmission loss, and demonstrates this knowledge in the experimental measurement of acoustic parameters of selected materials (textiles from the automobile, polyurethane foam and absorbent cotton).

Keywords: impedance tube, acoustic descriptors, sound absorption, transmission loss.

Published: June 22, 2020  Show citation

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Gumanová, V., Džuňová, L., Sobotová, L., & Králiková, R. (2020). Impedance Tube as a Tool for Evaluating Acoustic Noise Descriptors - The Experimental Measurement of Acoustic Parameters. Acta Mechanica Slovaca, 24(2), 56-64. doi: 10.21496/ams.2020.010
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