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Abstract
Noise is noise pollution that can disturb health if its intensity exceeds the hearing threshold. Acoustic material is one way to control noise. This research uses pineapple (Ananas comosus) leaf fibre as an acoustic material with Polyvinyl Alcohol (PVA) adhesive. The purpose of this research is to measure the value of the sound absorption coefficient using the impedance tube method with variations in composition and thickness. The results showed that for variations in the composition of pineapple leaf fibre with PVA (7:3, 3:1, 8:2, and 6.5 :3.5) at a frequency of 800 Hz, the sound absorption coefficient values were 0.18; 0.17; 0.37 and 0.18, respectively. In the thickness variation (1 cm, 1.5 cm, and 2 cm), the sound absorption coefficient values were 0.47; 0.65 and 0.73, respectively. The results show that the amount of sound absorption in the composition variation and thickness variation has met the ISO 11654 standard.
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References
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