A Study of Sound Absorption Ability of Fiberboard from Palmyra Peel

Abstract

The objective of the research is to study fiberboard from palmyra palm peel for sound absorbance. The experiment will study the appropriate lengths of fiber  and sizes for fiberboard (thickness: 2 inch, size 10 x 10 cm, 15 x 15 cm, and 20 x 20 cm) to get the performance to absorb sound, and study in the frequency range of the human ear can be perceived well is the range of 400-4000 Hz.

The result of the test shows that ability to absorb sound of fiber from palmyra palm peel at 2 inches thickness. There are 2 types of Wallboard: the first form; Cutting the fibers from the eyelids to give the fibers have a uniform length of the line and for the adhesion of the binder. The second form; is the fiber has not undergone any cutting process, using the length of the fiber. It was found that the fibreboard from palmyra palm peel can absorb sound at 400 - 1,400 Hz. the first form, absorption capacity is 400 - 1,200 Hz or 2.6 - 7.8 dB. the first form, the sound absorption capacity is 400 - 1,400 Hz or 2.6 - 9 dB.

The results showed that fiber cutting results in sound absorbing performance less than does not cutting the fiber, the size and thickness cause the several unique styles placement of the fibreboard from palmyra palm.