Understanding Noise Exposure Limits: Occupational vs. General Environmental Noise

Noise-induced hearing loss (NIHL) is 100% preventable; however, once acquired, it is permanent and irreversible [NIOSH 1998]. Understanding and minimizing the risks associated with noise exposures are the keys to preventing noise-related hearing loss.  NIOSH has a long history of leadership in conducting research, advancing control measures, and recommending noise-exposure limits to prevent job-related hearing loss.  Sometimes, observers ask whether our recommended limits for occupational exposure can be applied to exposures in the general environment from sources such as street noise, consumer appliances, and recreational pastimes.
The answer, as we'll explain below, is not exactly.

Source: http://blogs.cdc.gov/niosh-science-blog/2016/02/08/noise/

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