Abstract:
A research has been done on the effects of partition in order to control noise using a
method of field survey. The results of this research suggested different results between
the results of measurements with partition and without partition. Partitions used in this research were three types of plants, ie Gandarusa (Justicia gendarussa), Bamboo
(Bambusa multiplex) and Tea (Acalypha siamensis), with different size (length, height and width). A Sound Level Meter (SLM) SL-4112 was used to measure sound intensity
level. Measurement, were carried out in two stages, (1) measurement of sound intensity
level without partitions, (2) measurement of sound intensity level with partitions. The
results showed that at observation point 1, the mean of sound intensity level were 77.73
dB and 79.29 dB for with and without partition respectively. Where as at point 2, the mean of sound intensity level without partition respectively were 93.68 dB and the
partition 86.54 dB, and at point 3, the mean of sound intensity level were 74.89 dB, and
70.70 dB respectively for without and with partition. Sound intensity tends to get
smaller with increasing geometry size of the partition. The bigger the partition, the
greater the value of TL (transmission loss) is. That is because of the amount of the
intensity of sound lost due to absorption increase with increasing the thickness (size) of the partition.
