An investigation on factors that cause error in reverberation time measurement (ISO 3382) in UTHM Lecturer Room

Azalan, A. and Ghazali, Mohd Imran and Jafferi, Noormaziah (2013) An investigation on factors that cause error in reverberation time measurement (ISO 3382) in UTHM Lecturer Room. In: Proceedings of the International Conference on Mechanical, Automotive and Aerospace Engineering (ICMAAE 2013), 2-4 July 2013, Kuala Lumpur.

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Abstract

This study was conducted to determine the cause of error that occurred on the reverberation time measurement. Measurements were performed in a UTHM lecturer room in accordance with ISO 3382 standards. Room was designed with different conditions; empty room, room with curtain and room that used egg containers as sound absorber. The results of measurements were compared with the results based on calculation using Sabine, Millington-Sette and Eyring formula. Comparisons were made using the Mean Absolute Error (MAE) statistical method. The analysis showed that the error occurs due to the factors of absorption materials selection, sound frequency, room shapes, material position and background noise.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:reverberation time; theoretical method; sound measurement; frequency; absorption coefficient; ISO 3382
Subjects:T Technology > TD Environmental technology. Sanitary engineering > TD891-894 Noise and its control
Divisions:Faculty of Mechanical and Manufacturing Engineering > Department of Engineering Mechanics
ID Code:4370
Deposited By:Normajihan Abd. Rahman
Deposited On:14 Oct 2013 10:13
Last Modified:21 Jan 2015 15:43

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