Noise is a generic term for any sound. The World Health Organization (WHO) recently has
referred to it as sensation pollution, because noise is sensed through human sensory organs. Noise
when exceeds the recommended level becomes pollution. It has auditory effects and non-auditory
effects, causing fatigue, deafness if exposed for a long period, may cause noise interference with
the communication between 300-500 Hz.
A sound’s loudness is measured in decibels (dB). Normal conversation is about 60 dB, a lawn
the mower is about 90 dB, and a loud rock concert is about 120 dB
Recent trends in living environment noise in indoor can be summarized as follows in major causes:
∙ An expansion of the area affected by road traffic noise and an increase in the number
of citizens affected have occurred due to urbanization.
∙ A rise in the number of civil complaints by the occupiers of apartments has emerged as
a social issue, and design practices that consider noise and vibration from the
construction stage has not been adopted, with apartment certification systems in use.
∙ Areas around new railways have been damaged by noise due to the opening of domestic
high-speed railways.
∙ Construction site noise damage has occurred at shooting ranges and in large-scale
housing development.
The physiological effects of noise include effects on the cardiovascular, endocrine, nervous, and
digestive systems. Noise also has biochemical effects and can lead to changes in blood lipid, blood
glucose, cortisol, epinephrine, norepinephrine, dopamine, growth hormone, magnesium (Mg), and
calcium (Ca) concentrations. So protective measures should be taken as soon as possible.