随着现代工业的发展,各种机器设备,交通运输工具和人口的增加,噪声对环境的污染已日益严重。事实上继废水、废气、废渣之后,城市环境噪声污染已成为社会四大公害之一。为了对环境噪音作出评价,1985年2月我们用江西红声器材厂生产的NDI型精密声级计,对驻武汉市的机关、院校、医院、工厂等11个部队单位的会议室、总机室、办公室、打字室、教室、实验室、教研室、病房、医疗室、阅览室、集体宿舍及部分生产车间的环境噪声 With the development of modern industry and the increase of various kinds of machinery and equipment, transportation means and population, the noise pollution on the environment has become increasingly serious. In fact, following the waste water, waste gas and waste residue, urban environmental noise pollution has become one of the four public hazards in the society. In order to evaluate the environmental noise, we used the NDI-type precision sound level meter produced by Jiangxi Hongsheng Equipment Factory in February 1985 to discuss the conference room and switchboard of 11 units in organs, institutions, hospitals, factories in Wuhan. Room, office, typing room, classrooms, laboratories, teaching and research rooms, wards, medical rooms, reading rooms, dormitories and some of the workshop production of environmental noise