Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Application of the wavelet transform and higher-order cumulant-based inverse filtering to the quantification of non-Gaussian noise for use in estimating hearing hazards.

Lei-SF; Hamernik-RP
1998 Midwinter Meeting Assoc Res Otolaryngology, St. Petersburg Beach, Florida, 1998 Feb :1-19
The foundation of the ISO-1999 standard for estimating NIHL in noise-exposed groups is tied to two postulates that form the basis of: (a) an age correction procedure and (b) the use of an energy metric (Leq) to quantify the exposure. This leads to a straight-forward relation; NIHL = f(age, Leq). Implicit in such a formulation is that temporal variables associated with a noise exposure are not significant for the production of NIHL. This is contrary to the accumulating experimental data that suggest that energy may be a necessary but not sufficient metric for the evaluation of noise exposures. For example, Lei et al. 1 have shown that the statistical properties of a nonGaussian noise, reflected in the kurtosis statistic, which incorporates both temporal and peak properties of a signal in the time domain [_B(t)] and spectral effects, when computed on the frequency domain signal [_B(f)], are highly correlated with the magnitude and distribution of sensory cell loss. In this paper we describe an approach to and present a rationale for the analysis of noise environments that incorporates the wavelet transform and higher-order cumulant based inverse filtering to obtain B(t), B(f), and the joint peak-interval histogram.
Noise-measurement; Hearing-conservation; Hearing-disorders; Noise-exposure; Hearing-loss; Noise-waves; Analytical-processes; Noise-induced-hearing-loss; Hearing-protection
Publication Date
Document Type
Conference/Symposia Proceedings
Funding Amount
Funding Type
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-K01-OH-000139; Grant-Number-R01-OH-002317
Source Name
1998 Midwinter Meeting of the Association for Research in Otolaryngology
Performing Organization
State University of New York, Plattsburgh, NY