Evaluation of impulse noise criteria using human volunteer data

Citation
Pc. Chan et al., Evaluation of impulse noise criteria using human volunteer data, J ACOUST SO, 110(4), 2001, pp. 1967-1975
Citations number
23
Categorie Soggetti
Multidisciplinary,"Optics & Acoustics
Journal title
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
ISSN journal
00014966 → ACNP
Volume
110
Issue
4
Year of publication
2001
Pages
1967 - 1975
Database
ISI
SICI code
0001-4966(200110)110:4<1967:EOINCU>2.0.ZU;2-C
Abstract
Four impulse noise auditory injury criteria adopted by NATO countries, name ly, the MIL-STD-1474D (USA), Pfander (Germany), Smoorenburg (Netherlands), and L-Aeq8 (France), are evaluated against human volunteer data. Data from subjects wearing single-hearing protection exposed to increasing blast over pressure effects were obtained from tests sponsored by the US Army Medical Research and Material Command. Using logistic regression, the four criteria were each correlated with the test data. The analysis shows that all four criteria are overly conservative by 9.6-21.2 dB for the subjects as tested. The MIL-STD-1474D for single-hearing protection is 9.6 dB lower than the o bserved injury threshold for 95% protection with 95% confidence for this pa rticular group of subjects as tested. Similar conclusions can be drawn for the other three criteria. (C) 2001 Acoustical Society of America.