Accession Number : ADA480638


Title :   Geluidsexpositie bij gebruik van CEP door F-16 crewchiefs (Sound Exposure Level of F-16 Crew Chiefs Using Communications Earplugs)


Descriptive Note : Final rept.


Corporate Author : TNO DEFENCE SECURITY AND SAFETY SOESTERBERG (NETHERLANDS)


Personal Author(s) : Houben, M M ; Verhave, J A ; Geurtsen, F W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a480638.pdf


Report Date : Mar 2008


Pagination or Media Count : 31


Abstract : For communication in noisy environments, communications earplugs (CEPs) are increasingly used. CEPs are earplugs that incorporate a miniature speaker through which communication can be presented to the user unattenuated while the earplugs do attenuate environmental sounds. To assess the sound exposure level of CEP users, not only environmental sounds should be taken into account, but also the sound exposure resulting from communication through the CEP. For this, a measurement method has been developed. It uses loudness matching to establish the relation between electric level to the CEP and perceived sound level. During activities, both the environmental noise and the electric signal to the CEP are recorded. The level of the environmental sounds, after attenuation by the hearing protection, is combined with the sound level produced by the CEP, which is determined from the electric level. This method is applied to F-16 crew chiefs at Air Base Volkel, a population that uses CEPs extensively in extremely noisy conditions. Our calculations show that communication through CEP significantly contributes to the sound exposure level of the crew chiefs. The estimated day dose, based on two launches and recoveries, is 79 dB(A), which is just below the maximum allowed level of 80 dB(A).


Descriptors :   *EXPOSURE(GENERAL) , *COMMUNICATION EQUIPMENT , *EAR PROTECTORS , *NOISE(SOUND) , FIGHTER AIRCRAFT , LOUDNESS , DUTCH LANGUAGE , FLIGHT CREWS , NETHERLANDS


Subject Categories : Protective Equipment
      Radio Communications
      Acoustics


Distribution Statement : APPROVED FOR PUBLIC RELEASE