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Document ID (ISN)66850
CIS number 96-981
ISSN - Serial title 0340-2444 - Zeitschrift für Arbeitswissenschaft
Year 1994
Convention or series no. G 7503 F
Author(s) Hesse J.M., Irle H., Strasser H.
Title Experimental study of hearing damage by impulse noise
Original title Laborexperimentelle Untersuchung zur Gehörschädlichkeit von Impulsschall [in German]
Bibliographic information Dec. 1994, Vol.48, No.4, p.237-244. Illus. 35 ref.
Abstract Ten volunteers aged 23 to 43 years were exposed to six noise events, the energy of which was equivalent to 8h exposure to 85dB(A). They were exposed to 94dB(A) for 1h and to 113dB(A) for 45s. In the following four exposures the 113dB(A) were split up into 180 impulses each lasting 250ms, 450 impulses of 100ms each, 1,800 impulses of 25ms each, and 9,000 impulses of 5ms each. The temporary threshold shift measured 2min after noise exposure was terminated (TTS2) and the required recovery time were significantly better after exposure to 113dB(A) for 45ms than after exposure to 94dB(A) for 1h. TTS2 and recovery time worsened significantly, however, with an increasing number of impulses of decreasing duration.
Descriptors (primary) impulse noise; temporary threshold shift; metalworking industry; forging hammers; hearing disorders; forging
Descriptors (secondary) recurrent noise; experimental determination; human experiments
Document type D - Periodical articles
Country / State or ProvinceGermany
Subject(s) Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Foundries, metalcasting and forging operations
Diseases of the ear and hearing damage
Metalworking industry