Loudness is measured in decibels (dB). As decibel level increases the length of time that you can safely hear without ear protection decreases. For example, sounds that are 90 dB can be dangerous to your ears if you are exposed to them for 8 hours or more. As the dB level increases by 5 the length of time decreases by half. A noise, which is 95dB, is only safe for 4 hours and so on.
A rock concert can average between 110 and 120 dB. The maximum length of exposure for those levels is around 15 minutes, but the average concert is two hours in length. Permanent hearing loss can occur instantly from sounds like firearms (150 dB) and impact tools.
Repeated exposure to loud noise will damage your hearing permanently.
For more information on protective hearing products, please call us at 513.489.3300.