Noise sampling issues for impact/impulse noise surveys.
J Acoust Soc Am 2003 Apr; 113(4)(Part 2):2196
Noise-induced hearing loss (NIHL) has been recognized as a serious health concern for decades. ISO Standard 1999: 1990 provides a means to predict noise-induced hearing loss (NIHL) based on LAeq measurements in the working environments of workers. This standard seems to work well for predicting hearing loss in continuous noise fields. However, it is possible that ISO 1999 does not apply well to impact, impulsive, or other transient noise fields. NIOSH and University of Pittsburgh are currently developing noise-sampling strategies to measure impact and impulse noise in a manufacturing environment with the aim of developing new impulsive noise metrics. As part of the study, broadband impact/impulse pressure measurements will be made. Issues such as instrumentation, data quality, repeatability, spatial sampling, equipment portability, and calibration are addressed. Also, the annotation, digitization, and editing of the waveforms will be discussed. As part of the project, an archival database of manufacturing impulse/impact will be created to support the future algorithmic development. The ultimate goal of the project is to develop new metrics to characterize the hazards of impact/impulse noise that will complement ISO 1999 for predicting NIHL.
Noise-induced-hearing-loss; Noise-analysis; Impact-noise; Impulse-noise; Hearing-loss; Standards; Ototoxicity; Hearing-conservation
NIOSH, 4676 Columbia Parkway, R-16, Cincinnati, OH 45226
Abstract; Conference/Symposia Proceedings
Disease and Injury: Hearing Loss
Journal of the Acoustical Society of America. Proceedings of the 145th Meeting: Acoustical Society of America, Nashville, TN, April 28-May 2, 2003