Hearing damage can begin after approximately 8 hours of exposure to sound levels at or above what dB?
Understand the Problem
The question is asking at what decibel level does hearing damage start occurring after 8 hours of exposure. This is fact recall question about health and safety.
Answer
85 dBA
Hearing damage can begin after approximately 8 hours of exposure to sound levels at or above 85 dBA.
Answer for screen readers
Hearing damage can begin after approximately 8 hours of exposure to sound levels at or above 85 dBA.
More Information
The safe listening time is cut in half for every 3-dB rise in noise levels over 85 dBA.
Tips
It's a common mistake to think about only the volume of sound, the length of exposure also affects hearing damage.
Sources
- Noise-Induced Hearing Loss (NIHL) - NIDCD - nidcd.nih.gov
- Occupational Noise Exposure - Overview - OSHA - osha.gov
- Noise-Induced Hearing Loss - CDC - cdc.gov
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