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Noise Thermometer

A noise's potential to do harm to hearing depends on its intensity, which is measured in decibels (dB), and its duration. Generally, a "safe" noise level registers 75 dB or less. However, as noise levels increase, it takes less exposure to affect your hearing. For instance, a person without hearing protection could be safely exposed to a sound at 85 dB for 8 hours, but at 120 dB for only 7 minutes. (Decibel increases are logarithmic, so 90 dB is 10 times as loud as 80 dB, and 110 dB is 20 times as loud as 90 dB.) With every 5 dB increase in noise, your safe exposure time is cut in half.

Noise Thermometer is available for sale in both poster and flier formats.


Click on Noise Thermometer
to enlarge
 Sound Topics
Noise Thermometer Noise-Induced Hearing Loss
Hearing Test Tinnitus
Hunting Ear Infections


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