Accession Number : ADA298507
Title : Human Auditory Response to Low-Level Aircraft Flyover Noise: Raw Data.
Descriptive Note : Interim rept. Jan 92-Sep 93,
Corporate Author : ARMSTRONG LAB WRIGHT-PATTERSON AFB OH BIODYNAMICS AND BIOCOMMUNICATIONS DIV
Personal Author(s) : West, Denise M. ; Green, Nancy K.
PDF Url : ADA298507
Report Date : AUG 1994
Pagination or Media Count : 121
Abstract : Changes in human hearing from exposure to low-flying aircraft noise representative of military training routes were measured during a laboratory study. In Phase 1, subjects were exposed to single flyover noise at levels of 115, 120, 125, and 130 dB(A). In Phase 2, subjecis were exposed to eight successive repetitions of a single flyover noise at a level of 125 dB(A) in one session and at a level of 130 dB(A) in a second session. Hearing threshold levels were measured immediately prior to and following each noise exposure. Some subjects experienced small decreases and others small increases in hearing sensitivity following the exposures. The temporary decreases in hearing sensitivity (temporary hearing losses) had disappeared in all subjects by the end of the test session in which they occurred. Overall, the data suggest that within the definitions of the laboratory study, which used worst-case noise expo sures relative to real-world exposures, the probability of noise induced hearing loss from low-flying aircraft noise in exposed populations is very small. (AN)
Descriptors : *HEARING, *AIRCRAFT NOISE, *AUDITORY PERCEPTION, STIMULATION(PHYSIOLOGY), SENSITIVITY, TABLES(DATA), EXPOSURE(PHYSIOLOGY), ACOUSTIC DATA, SOUND PRESSURE, THRESHOLDS(PHYSIOLOGY), PSYCHOACOUSTICS, REACTION(PSYCHOLOGY).
Subject Categories : Anatomy and Physiology
Distribution Statement : APPROVED FOR PUBLIC RELEASE