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Noise Induced Hearing Loss (NIHL)

by Jay Kim last modified 2013-10-07 12:52

Many workplaces are subject to various types of noises. Current noise guidelines recommend an exposure limit based on the overall sound pressure level (SPL) and equal energy hypothesis (EEH), thus overlooking the effect of temporal and spectral variations of the noise. Therefore, it is widely believed that current guidelines are not suitable to assess the risk of complex or impulsive noises. This may have contributed to noise-induced hearing loss (NIHL) becoming the most common occupational disease. 

The ultimate goal of this research is to develop a general noise risk assessment procedure that can be applied to any type of noise. The research has been supported by NIOSH through a couple of PRP grants and a R21 grant. The current stratgey is to develop a new noise guideline based on a kurtosis corrected SPL. 

The research combines advanced signal analysis method we developed, a technique to simulate auditory system responses and a statistical method to obtain a noise metric based on the animal expsoure study results.  You may also visit Dr. Jay H. Kim's home page for more information.

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