Noise in America: The Extent of the Noise Problem

摘要

The number of Americans exposed to various levels of occupational and environmental noise is estimated. Estimates are made for 11 categories of noise producers (e.g., traffic, aircraft, construction) using the Ldn or Leg(24) metrics. The assumptions in the models used, including demographic projections, are made explicit for all estimates. Estimates for combined exposures to traffic and other community noise sources are also made, as well as indoor noise exposures from home equipment like fans and clothes washers. According to the estimates, 1.5 million people are exposed to outdoor noise levels (from all sources) of over 75 Ldn, and over 90 million, to levels over 58 Ldn. Over 9 million people are exposed to occupational noise in excess of 80 dB (Leg(24)).