摘要
目的收集噪声条件下工作的工人听力检查信息,同时对其工作环境进行噪声检测并频谱分析,分析判断工人听力损失与噪声频率是否具有相关性,为噪声性听力损伤诊断及防护提供依据。方法收集2个工厂4个车间260名工人听力信息,同时对4个车间工作现场进行噪声强度及频率测量,应用praat软件进行录音及频谱分析。结果 260名工人中99人出现听力下降,车间1工人63名,噪声频率范围1 400-17 000 Hz,强度62-81 d B,听力下降17人（26.98%）,工龄5年以上13人（76.47%）;车间2工人97名,噪声频率范围2 500-14 000 Hz,强度55-71 d B,听力下降24人（24.74%）,工龄5年以上19人（79.17%）;车间3工人52名,噪声频率范围3 500-15 000 Hz,强度84-98 d B,听力下降28人（53.85%）,工龄5年以上25人（89.29%）;车间4工人48名,噪声频率范围3 000-17 000 Hz,强度85-101 d B,听力下降30人（62.5%）,工龄5年以上27人（90%）。工人听力损失主要为高频,约4 000 Hz开始出现。结论车间工作环境噪声频率分布较广,从几百赫兹至几万赫兹,工人听力损失主要表现为高频听力下降,一般从4 000 Hz开始较常见,逐渐扩展到其它频率,语频受损较少见,且较轻,听力受损程度与噪声强度及工作时间成正比。
Objective To collect the data of those workers hearing chart,the intensity and frequency of noise was recorded in their workshop,and Spectral analysis was done according to the taping of noise. The relevance was analysed between hearing loss and noise frequency. It will provide one theoretical base for diagnosis and safeguard of the noise deafness.Methods 260 records of worker were collected in two factories including four workshops. The intensity and frequency of noise was surveyed in the four workshops,and the record was analyzed by praat software.Results Hearing of 99 workers among 260 workers was decreased. There were 63 workers in workshop one,the frequency of noise was 1400 - 17000 Hz in the workshop,the intensity of noise was 62 - 81 d B,there were 17 workers（ 26.98%） with hearing loss,13 workers of them had more than five years（ 76.47%）. There were 97 workers in workshop two,the frequency of noise was 2500 - 14000 Hz in the workshop,the intensity of noise was 55 - 71 d B,there were 24 workers（ 24. 74%） had hearing loss,19 workers of them had more than five years（ 79.17%）. There were 52 workers in workshop three,the frequency of noise was 3500 - 15000 Hz in the workshop,the intensity of noise was 84 - 98 d B,there were 28 workers（ 53.85%） suffering hearing loss,25 workers of them had more than five years（ 89.29%）. There were 48 workers in workshop four,the frequency of noise was3000 - 17000 Hz in the workshop,the intensity of noise was 85 - 101 d B,there were 30 workers（ 62.5%） had hearing loss,27 workers of them had more than five years（ 90%）. The worker＇s hearing loss was obvious in high frequency about 4000 Hz.Conclusions The frequency of noise is wide in the workshop,from hundreds to ten thousands Hertz. The worker＇s hearing loss was obvious in high frequency,it is first start at 4000 Hz,and will expand to other frequency gradually. The worker ＇s hearing loss was infrequent in language frequency. The hearing loss of workers in the workshop showed time-dose-effect r
出处
《齐齐哈尔医学院学报》
2016年第25期3201-3203,共3页
Journal of Qiqihar Medical University
基金
厦门市海沧区科技计划项目(350205220135011)
关键词
噪声
工人
听力损失
频谱分析
Noise
Worker
Hearing loss
Spectral analysis
