title: Effect of increased noise levels by supersonic aircraft on annoyance levels and time estimations.
abstract: Several tests designed to assess the effects of increased noise levels created by the Concorde supersonic aircraft were administered to 48 residents living around Dulles International Airport and 31 persons not living near an airport. Results of a pretest questionnaire and lack of significant changes in annoyance levels and time estimations indicate that, while airport-area residents may be more conscious of aircraft noise, changes in the perceived intensities of sounds may not occur.
mesh_terms: D000293:Adolescent; D000328:Adult; D000401:Aircraft; D001290:Attitude; D002648:Child; D006801:Humans; D008144:Loudness Perception; D008875:Middle Aged; D009622:Noise; D009624:Noise, Transportation; D013998:Time Perception