BS EN ISO 4869-1:2018规定了在听力阈值下测量听力保护器声衰减的主观方法。该方法是一种实验室方法，旨在在受控测量条件下产生可重复的值。这些值仅在使用者以与受试者相同的方式佩戴听力保护器的情况下，才反映听力保护器的衰减特性。交叉引用:IEC 60263IEC 61260-1ISO 8253-2EN 13819-1ISO 389-1ISO 354ANSI S3。20-2015ANSI S12。6-2016ISO 7240-24ISO/TS 4869-5ISO 8253-1GUM:1995ISO/IEC指南98-3购买时可用的所有现行修订版均包含在本文件的购买中。

BS EN ISO 4869-1:2018 specifies a subjective method for measuring sound attenuation of hearing protectors at the threshold of hearing. The method is a laboratory method designed to yield reproducible values under controlled measurement conditions. The values reflect the attenuating characteristics of the hearing protector only to the extent that users wear the device in the same manner as did the test subjects.Cross References:IEC 60263IEC 61260-1ISO 8253-2EN 13819-1ISO 389-1ISO 354ANSI S3.20-2015ANSI S12.6-2016ISO 7240-24ISO/TS 4869-5ISO 8253-1GUM:1995ISO/IEC Guide 98-3All current amendments available at time of purchase are included with the purchase of this document.