Noise Exposure Estimates of Urban MP3 Player Users
Noise Exposure Estimates of Urban MP3 Player Users
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DOI：
10.1044/1092-4388(2010/09-0283
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发表时间：
2011-02-01
影响因子：
2.6
通讯作者：
Fligor, Brian J.
中科院分区：
文献类型：
--
作者：
Levey, Sandra;Levey, Tania;Fligor, Brian J.
目的：研究189名年龄在18-53岁的大学生进入纽约市大学校园时使用个人听力设备（PLD）的声级和持续时间，以确定PLD的噪声暴露是否超过推荐的暴露限值以及可能影响暴露的因素。方法：使用校准的声级计在人体模型上测量了PLD耳机的自由场等效声级。参与者报告了人口统计信息，他们是否刚下地铁，使用的PLD和耳机的类型，以及他们每天使用PLD的时间和每周使用PLD的天数。根据PLD耳机测量的自由场等效声级和报告的PLD使用情况，每天58.2%的参与者超过85 dB A加权8小时等效声级（L-Aeq），每周51.9%超过85分贝A加权40小时等效连续声级（L-Awkn）。结论：大多数PLD用户超过推荐的声音暴露限制，这表明他们在噪声引起的听力损失的风险增加。对这些参与者的人口统计数据和前往校园的交通方式进行分析，未能表明PLD使用或影响声音暴露的交通方式存在任何特定的性别差异。
Purpose: To examine the sound level and duration of use of personal listening devices (PLDs) by 189 college students, ages 18-53 years, as they entered a New York City college campus, to determine whether noise exposure from PLDs was in excess of recommended exposure limits and what factors might influence exposure.Method: Free-field equivalent sound levels from PLD headphones were measured on a mannequin with a calibrated sound level meter. Participants reported demographic information, whether they had just come off the subway, the type of PLD and earphones used, and duration per day and days per week they used their PLDs.Results: Based on measured free-field equivalent sound levels from PLD headphones and the reported PLD use, per day 58.2% of participants exceeded 85 dB A-weighted 8-hr equivalent sound levels (L-Aeq), and per week 51.9% exceeded 85 dB A-weighted 40-hr equivalent continuous sound levels (L-Awkn).Conclusions: The majority of PLD users exceeded recommended sound exposure limits, suggesting that they were at increased risk for noise-induced hearing loss. Analyses of the demographics of these participants and mode of transportation to campus failed to indicate any particular gender differences in PLD use or in mode of transportation influencing sound exposure.