Noise Safety or Noise exposure is the amount of sound that a person is exposed to over time. It is measured in decibels (dB). Noise levels above 85 dB can cause hearing loss, and the risk of hearing loss increases as the noise level increases. There are a number of things that can be done to protect against noise exposure. These include: Wearing hearing protection, such as earplugs or earmuffs, when exposed to loud noise. Using engineering controls to reduce noise levels, such as installing soun