ISO 4869-2:2018 声学 听力保护器 第2部分：戴上听力保护器时有效a加权声压级的估计

标准编号：ISO 4869-2:2018

中文名称：声学 听力保护器 第2部分：戴上听力保护器时有效a加权声压级的估计

英文名称：Acoustics — Hearing protectors — Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn

发布日期：2018-10

标准范围

本文件规定了三种方法（倍频程、HML和SNR方法）来估计佩戴听力保护器时有效的A加权声压级。该方法适用于噪声的声压级或等效连续声压级。虽然主要用于稳定噪声暴露，但这些方法也适用于含有脉冲成分的噪声。这些方法可能不适用于峰值声压级测量。倍频程、H、M、L或SNR值适合于建立用于选择或比较听力保护器的声音衰减标准，和/或设置最小可接受的声音衰减要求。

This document specifies three methods (the octave-band, HML and SNR methods) of estimating the A-weighted sound pressure levels effective when hearing protectors are worn. The methods are applicable to either the sound pressure level or the equivalent continuous sound pressure level of the noise. Although primarily intended for steady noise exposures, the methods are also applicable to noises containing impulsive components. It is possible that these methods could not be suitable for use with peak sound pressure level measurements.The octave-band, H, M, L or SNR values are suitable for establishing sound attenuation criteria for selecting or comparing hearing protectors, and/or setting minimum acceptable sound attenuation requirements.

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