Study of effectiveness of noise control at the highway in Klang Valley / Ahmad Zhafrie Md Junus

A peaceful and comfortable life happens to be the dream of anyone. The term of comfortable is unpredictable or it can't be direct translated. Generally, the term of comfort is more to accepted situation. The accepted level is difficult to predict and it depend on the accepted level their own. Some of can handle the level of sound higher than other group. The term peace means there are any distraction from the outer source. The traffic noise is one of the most distractions to the residential nearby. The noise comes from the vehicles noise. The noise control is the way to reduce the noise level before reach to the receiver. There are several method can be use in controlling according to the location, requirement of noise reduction, space. One of the methods is noise barrier wall. The barrier wall can be use in narrow space between the source and the receiver. There are several material used in the construction of the noise barrier. The effectiveness of the barrier wall is depending on the total transmission loss by the noise control and the total noise level reach to the receiver. If the noise level reach to the receiver is lower than the standard guideline by the authority it can be declare effective.