Sound Absorption Capacity of Oil Palm Frond Fiberboard with Different Finishing

Abstract

This research studied primarily the sound absorption of oil palm frond fiberboard with different finishing, i.e. rough, screen and perforated surfaces. All boards confirmed that the higher the frequencies, the better the sound absorption coefficients. Although the density of the samples with rough surface was the lowest, their sound absorption capacity was the highest at every measured octave band frequencies. Perforated samples showed the better sound absorption coefficients than the ones with screen surface. When comparing their sound absorption coefficients with those of the sound absorbing materials in commercial use, oil palm frond fiberboards generally showed a better sound absorption capacity.