| Lower Hearing Threshold by Noise |
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| 作者姓名： | 龙长才 邵峰 张燕萍 秦佑国 |
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| 作者单位： | [1]DepartmentofPhysics,HuazhongUniversityofScienceandTechnology,Wuhan430074 [2]AcousticsLaboratory,TsinghuaUniversity,Beijing100084 [3]DepartmentofOpto-electronicsEngineeringandCommunication,HuazhongUniversityofScienceandTechnology,Wuhan430074 [4]AffliatedHospital,HuazhongUniversityofScienceandTechnology,Wuhan430074 |
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| 摘 要： | We demonstrate that noise can be a benefit factor that enables us to hear weaker signals. We measured the hearing thresholds of subjects for pure tone in different noise levels. The results show that pure tone thresholds with noise of some levels are lower than that without noise. The largest down-shift of the threshold by noise among the examined subjects is 5.7 dB, and the smallest is 1.7 dB.
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| 关 键 词： | 噪声 声学测量 听觉范围 高斯白噪声 声学实验 |
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