Comparative study of steady-state noise and non-stationary noise-induced hearing loss of workers

Objective Comparative analysis of the stationary noise and non-stationary noise cause hearing loss of workers.Methods Random selection of the same enterprise,the workers working under steady-state noise 50 cases of group A steady-state group,and select the workers working under non-stationary noise of 35 cases of non-steady-state group(group B) were given A,B two study period of fourteenmonths of steady-state noise and non-stationary noise environment,the degree of hearing impairment in patients for testing.Results The statistics,A group of object hearing loss rates lower than group B,rates lower than group B,occupational deafness rates lower than group B,object hearing damage relative to the group B object is low.Conclusion Steady noise and unsteady noise in the hearing impaired workers much higher,and the high rate of management of occupational deafness.