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KMID : 0377619770320030261
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Korean Jungang Medical Journal
1977 Volume.32 No. 3 p.261 ~ p.269
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Hearing Impairment due to Noise in the Kyung-In Industrial Area
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Kwon Sook-Pyo
Moon Young-Hahn
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Abstract
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The industrial revolution has brought about the development of machines as well as commodities; however, its by-product, noise, has become an important public health problem.
The amount of hearing. loss in industrial environments depends on the level of intensity, frequency distribution, exposure time and individual susceptibility.
Occupational hearing loss falls into the category of noise-induced permanent threshold shift. Since it occurs beyond the conversational range, usually above 4, 000 Hz, the early detection of noise-induced hearing loss is quite difficult.
Occupational hearing impairment has been increasing in recent years because of the increase in noise producing sources.
The present study was carried out in 8 factories of 4 major types of industries´ in the Kyung In areas.
The various factors were analyzed and the results were reported in the personnel exposed to excessive noise by measuring the sound pressure level as well as by specific physical -examinations.
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