Analysis of the effect of traffic noise on the indoor environment in building

Traffic noise is the primary noise source In cities, and seriously influences the indoor environment of buildings adjoining the road. Being different height of the building, the extent of which is effected respectively is also distinct. The paper explicates the acoustic principle of traffic noise propagation in perpendicular direction, including the generation of reverberant sound, the increase of reflected sound and the attenuation of sound propagation, and studies the relationship between the effect of outdoor noise on the indoor environment and the height of the building. The experiment that practically tests the sound level of different story in the three buildings is performed and the results of this test are analyzed from the foresaid three aspects. It is concluded that for the lower building the sound level of every story is increasing with the height rising; for the higher building that of some middle story is highest. In addition, the paper presents the means against the effect of traffic noise on the indoor environment.