Accession Number : ADA115763

Title :   Variations in Noise Dosimeter Readings of FLuctuating Noise.

Descriptive Note : Technical rept.,

Corporate Author : AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH

Personal Author(s) : Fairman,Terry M

PDF Url : ADA115763

Report Date : Jan 1982

Pagination or Media Count : 24

Abstract : Significant differences in the mean Leq(24) values were observed with dosimeters used in a study monitoring the daily noise exposures of children. That study, conducted by the Fels Research laboratory and the United States Environmental Protection Agency. In the Fels study a diffrence was observed in the mean Leq(24) values of about 7 dB using General Radio (Gen Rad) and Metrosonics noise dosimeters. The only statistically significant difference observed was between instrument types with the Gen Rad units reading higher. Possible explanations such as age and sex differences among the subjects and procedural differences were examined and ruled out. It was reasoned that group differences in mean Leq(24) recorded by the two dosimeter types were due to idiosyncrasies in the instruments themselves which resulted in systematic measurement errors. An investigation was conducted by the Bioacoustics Laboratory at Wright-Patterson AFB to determine the cause and to quantify the observed differences. (Author)

Descriptors :   *Noise(Sound), *Dosimeters, Exposure(Physiology), Monitoring, Bioacoustics, Measurement, Test methods, Dosage, Level(Quantity), Tables(Data)

Subject Categories : Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE