Accession Number : AD0758588

Title :   Aircraft Sound Description System Background and Application

Descriptive Note : Final rept.

Corporate Author : FEDERAL AVIATION ADMINISTRATION WASHINGTON DC OFFICE OF ENVIRONMENTAL QUALITY

Personal Author(s) : Cruz, J E

PDF Url : AD0758588

Report Date : Mar 1973

Pagination or Media Count : 63

Abstract : An objective approach to describing aircraft sound levels for areas in the vicinity of airports called 'Aircraft Sound Description System' (ASDS), suitable for both manual and computer application, is set forth. The basic premise of the concept is to state exposure to aircraft sound in terms of the amount of time that sound levels exceed a preselected threshold value. The rationale supporting the selection of this procedure, the selection of the threshold value, as well as some operating time constants are covered together with two hypothetical applications.

Descriptors :   *AIRCRAFT NOISE, *AIRPORTS, AIRCRAFT LANDINGS, EXPOSURE(PHYSIOLOGY), MEASUREMENT, PERIODIC VARIATIONS, TAKEOFF, THRESHOLDS(PHYSIOLOGY)

Subject Categories : Terminal Flight Facilities
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE