Types of Homotoxins

Noise pollution
• At 100 dB and above, hearing starts to be impaired irrespective
of length of exposure,
• The pain threshold starts at 120 dB.
© IAH 2007
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In our modern society, especially in cities and near to airports and industrial
areas and some working places at factories, but also voluntary in disco and
concerts, noise pollution is often present. Although background noise is needed
to feel confident (absolute silence is seen by the brain as an alarm) noise can be
a pollutant. Continuous noise above the speech level (50-60 dB) works irritable at
the end. Sounds above 100 dB are absolute unpleasant and above 120 dB cause
ear pain and even irreversible ear damage.
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