Ivarsson A, Bennrup S, Toremalm N G
Occupational Audiology Centre, University of Lund, Ideon-Malmö, Sweden.
Scand Audiol. 1992;21(2):79-86. doi: 10.3109/01050399209045986.
A computer-controlled fixed-frequency Békésy audiometer has been used together with simplified mathematical models for hearing threshold measurements and analysis in 1,796 subjects from seven different noise environments with exposures varying from less than 80 dB(A) to greater than 95 dB(A). The methods of measurement and analysis have been used to determine hearing loss caused by noise for various age groups for men and women. It has also been possible to estimate the equivalent noise level to which workers are nowadays subjected under hearing protectors and the reduction in exposure level over the past 40 years. The results illustrate the effects of noise-reduction measures and the use of hearing protectors on the development of hearing loss suffered by workers in the actual Swedish industries.
一台计算机控制的固定频率贝凯西听力计，与简化的数学模型一起，用于对来自七个不同噪声环境的1796名受试者进行听力阈值测量和分析，这些受试者的噪声暴露范围从低于80分贝（A）到高于95分贝（A）。测量和分析方法已用于确定不同年龄组男性和女性因噪声导致的听力损失。还能够估计当今佩戴听力保护器的工人所接触的等效噪声水平，以及过去40年中暴露水平的降低情况。结果说明了降噪措施和听力保护器的使用对瑞典实际工业中工人听力损失发展的影响。
