GBT7584.2-1999声学护听器第2部分：戴护听器时有效的A计权声压级估算

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1、ICS13.340.20C71中华人民共和国国家标准Gs/T7584.2一1999idtISO4869-2:1994声学护听器第2部分:戴护听器时有效的A计权声压级估算Acoustics-Hearingprotectors-Part2:EstimationofeffectiveA-weightedsoundpressurelevelswhenhearingprotectorsareworn1999一08一24发布2000一05一01实施国家质董技术监督局发布cu/'r7584.2-1999目次前言············································

2、·····················，········。··。····································⋯⋯工ISO前言···············································。··············，·······，····························。·····。··⋯⋯I弓1言·········································································，·····························

3、··········⋯⋯班1范围·....................................................................................................................I2引用标准····························。··。·································，······································⋯⋯13定义··············································

4、·····················，······················，······················。⋯14护听器声衰减的测量...............................................................................................25选定保护率护听器的假设保护值APV。的计算·········，·············································⋯⋯26倍频带法···········‘······················

5、·······································································⋯⋯27高中低频衰减法(简称HMI,方法)··························，···········，·······················。.·..·....⋯⋯38单值评定法(简称SNR方法)·····················································。··············一，...⋯⋯4附录A(提示的附录)假设保护值APV、的算例···············

6、·，，·······································⋯⋯5附录B(提示的附录)倍频带法计算I,'，二举例··········“··················，···..·..·..·..·..·..·..⋯⋯。⋯5附录C(提示的附录)H值、M值和I.值计算及使用举例················································⋯⋯6附录n(提示的附录)SNR值的计算和使用举例，···························，··························⋯⋯7CB/T7584.2-1

7、999前台本标准等同采用国际标准ISO4869-2:1994《声学护听器第2部分:戴护听器时有效的A计权声压级估算》。ISO4869-2规定的评价方法，在国际上已作为评价护听器声衰减性能的基本方法。为尽快提高我国护听器声性能评价水平，便于与国际接轨，特制定本标准，并在等同转化工作中遵循了忠实性的原则。本标准附录A、附录B、附录C和附录D是提示的附录。本标准由中华人民共和国国家经贸委安全生产局提出。本标准由全国劳动防护用品标准化技术委员会归口。本标准起草单位