DIN EN ISO 4869-3:2007
聲學.聽力保護器.第3部分:用聲學試驗器具測量耳罩式保護器的插入損耗(ISO 4869-3:2007)

Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture (ISO 4869-3:2007); English version of DIN EN ISO 4869-3:2007-09

被代替

標準號

DIN EN ISO 4869-3:2007

發布

2007年

發布單位

德國標準化學會

替代標準

DIN EN ISO 4869-3:2007-09

當前最新

DIN EN ISO 4869-3:2007-09

 

 

引用標準

IEC 60263 IEC 61094-4 IEC 61260 ISO 48 ISO 4869-1 ISO Guide 98:1995

被代替標準

DIN EN 24869-3:1994

適用范圍

This part of ISO 4869 specifies a method for measuring the insertion loss of ear-muff type hearing protectors using an acoustic test fixture. The method is applicable to the investigation of production spreads of performance as part of type approval or certification procedures, and to the investigation of the change of performance with age. It is intended to ensure that ear-muff hearing protector samples submitted for subjective testing of attenuation according to ISO 4869-1 have performances typical of the type. The method specified in this part of ISO 4869 is not applicable as the basic test for type approval. Performance data obtained by this method are not intended to be quoted as representing the real-ear sound attenuation of an ear-muff, nor the protection provided by the ear-muff. For the testing of certain ear-muffs (such as those attache*d to safety helmets, or those with contoured ear-cups or ear-cushions, or supra-aural ear-muffs), the procedure described in this part of ISO 4869 might need to be modified.

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