Standard No.:	GB/T 7584.2-1999
English Name:	- Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn
Chinese Name:	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
Chinese Classification:	C71    Industrial physical hazard control
Professional Classification:	GB    National Standard
ICS Classification:	13.340.20 13.340.20    Head protective equipment 13.340.20
Issued by:	AQSIQ
Issued on:	1999-8-2
Implemented on:	2000-5-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	150.00
Delivery:	via email in 1~3 business day

本标准规定估算戴护听器时有效的A计权声压级三种方法（倍频带法，HML法和SNR法）。此三种方法既适用于噪声的声压级，又适用于噪声的等效连续声压级。本标准规定的方法主要适用于稳态噪声暴露，也可用于包含有脉冲成分的噪声。本规定不适于用峰值声压级测量的噪声。倍频带值、H值、M值、L值或SNR值用作建立声衰减评价标准，以便于选择和比较护听器，并可制定声衰减的最低要求。