Development of a new standard laboratory protocol for estimating the field attenuation of hearing protection devices. Part III. The validity of using subject-fit data
Development of a new standard laboratory protocol for estimating the field attenuation of hearing protection devices. Part III. The validity of using subject-fit data
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DOI：
10.1121/1.423236
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发表时间：
1998-02-01
影响因子：
2.4
通讯作者：
Royster, LH
中科院分区：
文献类型：
--
作者：
Berger, EH;Franks, JR;Royster, LH
阿萨工作组S12/WG 11的任务是开发听力保护装置（HPD）的“实验室和/或现场程序，以产生有用的现场性能估计”。通过实验室间的研究，选择、设计、测试了一种阈值时的真耳衰减程序，并将其纳入1997年批准的标准草案中[J. D。Royster等人，“制定新的标准实验室协议，用于估计听力保护设备的场衰减。第一部分.认可标准委员会S12工作组11的研究，噪声，“J. Acoust。美国社会99，1506-1526（1996）; ANSI S12.6-1997，“用于测量听力保护器的真实耳衰减的美国国家标准方法”（美国国家标准协会，纽约，1997）]。真实世界的估计程序利用受试者拟合方法，听众在听力测定方面熟练，但在使用HPD方面缺乏经验。决定使用受试者拟合方法的一个关键因素是评估工作人员在实践中获得的实验室数据相对维斯衰减值的代表性。对22项现场研究进行了审查，以开发用于比较目的的数据库。结果表明，实验室受试者拟合衰减值通常等于或大于现场衰减值，并且产生了比实验者拟合或实验者监督拟合类型的结果更好的对这些值的估计。最近的数据中讨论的文件，但没有在原来的分析时，证实了调查结果。(C)1998年美国声学学会。【S0001-4966（98）03001-X】。
The mandate of ASA Working Group S12/WG11 has been to develop "laboratory and/or field procedure(s) that yield useful estimates of field performance" of hearing protection devices (HPDs). A real-ear attenuation at threshold procedure was selected, devised, tested via an, interlaboratory study, and incorporated into a draft standard that was approved in 1997 [J. D. Royster et al., "Development of a new standard laboratory protocol for estimating the field attenuation of hearing protection devices. Part I. Research of Working Group 11, Accredited Standards Committee S12, Noise," J. Acoust. Soc. Am. 99, 1506-1526 (1996); ANSI S12.6-1997, "American National Standard Methods for Measuring Real-Ear Attenuation of Hearing Protectors" (American National Standards Institute, New York, 1997)]. The real-world estimation procedure utilizes a subject-fit methodology with Listeners who are audiometrically proficient, but inexperienced in the use of HPDs. A key factor in the decision to utilize the subject-fit method was an evaluation of the representativeness of the laboratory data vis-a-vis attenuation values achieved by workers in practice, Twenty-two field studies were reviewed to develop a data base for comparison purposes, Results indicated that laboratory subject-fit attenuation values were typically equivalent to or greater than the field attenuation values, and yielded a better estimate of those values than did experimenter-fit or experimenter-supervised fit types of results. Recent data which are discussed in the paper, but which were not available at the time of the original analyses, confirm the findings. (C) 1998 Acoustical Society of America. [S0001-4966(98)03001-X].