Abstract
Aircraft operations and the resulting noise emissions have widespread implications that affect numerous stakeholders including airport authorities, airlines, navigation providers, government entities, developers, investors, community members and more. These diverse audiences require information about the degrees of impact of aircraft operations as they relate to noise. The outcome from the use of this information can affect everything from airspace design, zoning, building codes, regulatory measures, public guidance etc. To simplify the subject of aircraft noise, there has always been an effort to use a single metric for the numerous applications listed above. However, this approach more often contributes to confusion and discrepancies as multiple agencies try to force a metric to fit a purpose for which it was not intended. While cumulative noise metrics such as DNL or NEF might be appropriate for annoyance prediction and land-use planning, they are not appropriate for communicating noise data to the public. Likewise, these metrics are not appropriate for building code requirements as they cannot be applied without conversions. Different metrics are developed for different purposes, and they should be applied for their prescribed usage. This paper discusses several metrics and their appropriate applications within the study of aircraft noise and its impacts.
Published Version
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