Estimating hearing protector attenuation for the second percentile using parametric statistics
نویسندگان
چکیده
منابع مشابه
Preferred Methods for Measuring Hearing Protector Attenuation
There are numerous well-documented measurement methods available to evaluate hearing protector attenuation, however, some are flawed or difficult to implement and some can and have been misused with the erroneous results fostering misleading conclusions. This paper will examine the three most robust methods including the “gold standard” in hearing protector attenuation measurements, namely real...
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PURPOSE To determine the efficacy of hearing protector insertion by comparing attenuation values measured by objective (MIRE) and subjective (REAT) methods in groups with and without training. METHODS The study included 80 male subjects assigned to experimental (with training) and control (without training) groups. The following procedures were performed: occupational history, objective and s...
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The attenuation provided by a hearing protection device (HPD) in the field is usually estimated by applying a derating factor to the laboratory-determined noise reduction rating (NRR) of the HPD. However, attenuation is highly dependent on individual-specific HPD fit. Prediction of an individual's attenuation depends on the accuracy of the measurement system and the variability of attenuation o...
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The attenuation characteristics of ten commercially available hearing protectors (five muffs and five plugs) were examined for 1/3-octave bands of noise centered at 1000, 2000, 3150, 4000, and 6300 Hz in ten normal-hearing young adults utilizing four psychophysical procedures. One of these procedures, the real-ear attenuation at threshold procedure described in the American standard for the eva...
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1 Asymptotics of Percentile Order Statistics Let Xi (i = 1, . . . , N) be independently identically distributed (IID) continuous random variables with CDF, P (x) = P(Xi ≤ x), and PDF, p(x) = dP . Let Y (α) be the 100αth percentile, which is dx N uniquely defined by ordering the outcomes, X(1) ≤ X(2) ≤ . . . ≤ X(N) (using the standard notation of order statistics) and setting YN (α) = X([αN ]) (...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1981
ISSN: 0001-4966
DOI: 10.1121/1.2018686