【摘要】 本文参考ISO/DIS1999·2(1985)《声学──职业性噪声测定与噪声引起的听力损伤评价》资料,结合我国“工业企业噪声卫生标准”,对九省市九个行业、1034个工厂、11794个声源和部分噪声暴露者听力等的实测结果,采用ISO/DIS19999·2标准中给出的LAeq的计算公式及对噪声暴露工人听阈值的计算公式求得其听阈值(HTLAN),按高斯分布法取得暴露声级LEX,8h为85、90、95、100dB的工人听阈频率在500、1000、2000、3000、4000、6000Hz的不同工龄组噪声暴露人群的听阈值(HTLAN)及职业性非噪声暴露人群听阈值(HTLA)的关系值。研究结果证明ISO/DIS1999·2也适用于我国。更多还原

【Abstract】 Based on the noise survey for 1034 plants and 11794 equipments as noise sources in 9 professions and 9 provinces in China, referred to ISO/DIS 1999·2 (1985)"Acoustics-Determination of occupational noise exposure and estimation of noise - niduced hearing impairment" as well as the national standard of China "The noise hygiene standard for industrial enterprises", the hearing threshold level associated with age and noise (HTLAN) and its relation with hearing threshold frequency associated with age(HTLA)for the workers under 85,90,95,100 dB of noise exposure level LEx.T.8h at 500, lK,2K, 3K,4K,6KHz are obtained in this paper.The formulas for calculation of LAeq, HTLAN,H’, H’ = H + N-HN/120 in ISO/DIS 1999·2 and Gauss distribution are used in the work. The standard ISO/DIS 1999·2 has been proved to be applicable in China.更多还原