Notice in Table 2 how fast the acceptable time exposure decreases as sound levels increase. This is why the government restricts how long you can work in loud environments without special headsets to protect sensitive eardrums. It’s when sounds become louder than 90 dB that hearing damage can occur. ![]() However, we are able to listen to 80 dB sound for more than 25 hours without harm. ![]() The 80 dB sound of a garbage disposal truck – can become noisy if the sound persists.
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