Abstract:
Noise is a problem that often occurs in the community, especially those living
near factories. This research was conducted to reduce noise pollution by using
acoustic walls made from palm fronds. This study used the impedance tube
method with two microphones. The acoustic wall sample uses palm fronds mixed
with gypsum which has a mass of 0.1 kg of palm fronds and 1 kg of gypsum. The
frequencies used are 125 Hz, 250 Hz, 500 Hz, 1000 Hz and 2000 Hz which will
be generated from the Signal Generator and will be received by the Sound Level
Meter based on the Windows Soundcard Oscilloscope application. The results of
this study show that the sound absorption coefficient is the best at a frequency of
250 Hz to 1000 Hz. In this study, it produced a good absorption coefficient value
used as a sound absorbing material.
