Koefisien Absorbsi Dinding Akustik Dengan Komposisi Bahan Pelepah Kelapa Sawit

ABSTRACT Noise is a major issue for people who live near roads or other noisy places. Sound absorbers are a good solution to this problem. This study aims to determine the absorption coefficient of the acoustic wall with a composition of palm fronds with a thickness of 3 cm and varying frond mass of 0.1 kg, 0.15 kg and 0.2 kg. This research used an impedance tube and the transfer function appr…