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发达国家中，噪声（常伴有振动、粉尘、高温、潮湿等）所致的职业性聋在SNHL中占重要地位，对外周听器造成退变损害，而且影响皮层和皮层下听中担的生物电活性，引致中枢神经和植物种经功能紊1，甚军引起心血管系统疾病。通用的纯音听力计国频域窄（0．125～skHZ），提供诊断信
In developed countries, occupational deafness due to noise (often accompanied by vibration, dust, heat, humidity, etc.) plays an important role in SNHL, causing degeneration damage to the external hearing aids and affecting the hearing of the cortex and cortex Bioelectrical activity, causing the central nervous and plant species by dysfunction 1, the cause of the military and cardiovascular disease. Universal pure tone audiometer national frequency domain narrow (0.125 ~ skHZ), to provide diagnostic letters