噪声的危害已日益为人们所重视.当噪声控制措施暂不能实现的时候,在强噪声环境中作业的人员迫切需要采取必要的个人防护措施,把噪声降低到人耳允许的范围.目前,已有多种形式的护耳器问世.我们对SLE-2型防噪声耳罩的性能,采用仿真耳和真耳听阀比较法进行了测试,其中包括客观和主观隔声值的测定,同时对高噪声下佩戴与不佩戴该耳罩暴露后20分钟的暂时阈移(TTS_(20))作了比较.二、实验方法 The harm of noise has been paid more and more attention by people.When the noise control measures can not be implemented temporarily, people working in strong noise environment urgently need to take the necessary personal protective measures to reduce the noise to the range allowed by the human ear. There are various forms of ear protection devices available.We tested the performance of the SLE-2 noise-resistant earmuffs using a simulated ear and true ear valve comparison method, which included the determination of objective and subjective sound insulation values, The comparison of the temporary threshold shift (TTS_ (20)) at 20 minutes after exposure to noise without the earcup was performed.