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411 REFERENCE · Wikibooks

Environmental Health Engineering Theory and Practice/Noise

Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.

NoiseNoise is unwanted sound judged to be unpleasant, loud or disruptive to hearing. From a physics standpoint, noise is indistinguishable from sound, as both are vibrations through a medium, such as air or water. The difference arises when the brain receives and perceives a sound. Useful Off-site Resources United States Centers for Disease Control: National Institute of Occupational Safety and Health (NIOSH): Noise and Hearing Loss Prevention