Estimation of sound pressure level exposures from sound power level measurements using the diffuse-field point source model Eyring theory.
Hayden-CS II; Zechmann-EL
Inter-Noise 2006. The 35th International Congress and Exposition on Noise Control Engineering, December 3-6, 2006, Honolulu, Hawaii. West Lafayette, IN: International Institute of Noise Control Engineering, 2007 Aug; 2:759-773
As part of a long-term goal to reduce noise induced hearing loss in the construction industry, the National Institute for Occupational Safety and Health (NIOSH) estimated the A-weighted sound pressure level at the operator's ear (LPA,est) from the A-weighted sound power (LWA) measurements of 118 various model powered hand tools using the diffuse-field point source model Eyring theory. LPA,est from the model are compared to sound pressure measurements (LPA, meas) acquired from a microphone located in the nominal hearing zone of a simulated powered hand tool operator. This paper provides a basis for the direct substitution of LWA for LPA,meas and a comparison of LPA,est to LPA, meas. The magnitude of LWA is found to be a reasonable predictor of the magnitude of sound pressure level exposure, or LPA, meas, that a powered hand tool operator might experience across a variety of acoustical environments. As such, LWA magnitude can be used directly to select appropriate hearing protection and estimate worker' noise exposure.
Noise; Noise-levels; Mathematical-models; Work-environment; Power-tools; Hand-tools; Sound; Exposure-assessment; Noise-measurement; Construction-equipment; Standards; Ears; Equipment-operators; Testing-equipment; Hearing; Acoustics
Charles Hayden, National Institute for Occupational Safety and Health, 4676 Columbia Parkway C27, Cincinnati, OH 45226
Inter-Noise 2006. The 35th International Congress and Exposition on Noise Control Engineering, December 3-6, 2006, Honolulu, Hawaii.