Accession Number : AD0689086

Title :   EXPERIMENTELLE UNTERSUCHUNGEN UEBER DIE STOERWIRKUNG VON FLUGZEUGLAERM (Experimental Investigations of Discomfort Produced by Airplane Noises),

Corporate Author : EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZURICH (SWITZERLAND) INSTITUT FUER HYGIENE UND ARBEITSPHYSIOLOGIE

Personal Author(s) : Grandjean,Etienne ; Perret,Etienne ; Lauber,Anselm

Report Date : 18 JUL 1966

Pagination or Media Count : 12

Abstract : The discomfort brought to students by airplane noises recorded on magnetic tape was studied during classes. During 18 periods, students hearing altogether 128 airplane noises, gave after each noise a score between 1 and 6 according to their subjective evaluation of the discomfort they experienced. The variables in the airplane noises which were used gave the following results: (1) The discomfort increases almost linearly with the auditory level expressed in db(A) or in PN db; this is true of the two auditory spectra studied (DC-8 and Caravelle). (2) The discomfort increases with the duration of noises. (3) For identical noise levels, expressed in db(A), the acoustical spectrum with high pitch predominance (Caravelle's landing) led to a stronger discomfort than the spectrum with low pitch predominance (taking-off of the DC-8). (4) The discomfort was the same during periods with 5 or 6 airplane noises as during periods with 10 or 11. (5) The repetition of the same noises led to a low but significant decrease in the discomfort experienced. (Author)

Descriptors :   (*AIRCRAFT NOISE, STRESS(PHYSIOLOGY)), (*AUDIOMETRY, AIRCRAFT NOISE), HUMANS, STRESS(PSYCHOLOGY), THRESHOLDS(PHYSIOLOGY), HEARING, SWITZERLAND, TOLERANCES(PHYSIOLOGY)

Subject Categories : Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE