Measurement And Evaluation Of The Sound Absorption Coefficient For Various Asian Woods

Norena Masliha, Masuri (2008) Measurement And Evaluation Of The Sound Absorption Coefficient For Various Asian Woods. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The research is carried out to determine the sound absorption coefficient of various wood samples. Acoustic surface impedance of sound absorbing materials can be measured by several techniques such as the impedance tube for normal impedance or with using the vibration chamber. All these techniques are based on the determination of the sound absorption. In this report, the impedance tube will be used as a method. The description of the measurement technique and a detailed analysis of the acoustic theory as well as the sample materials are included. The paper presents a measurement technique of the sound absorption properties of materials, based on the measurements on random incidence technique. It allows one to measure the absorption coefficient with using different frequency value. The sound absorption coefficient (α) are number in range 0.00 – 1.00, the higher the number, the greatest the sound absorption coefficient(α).

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