JIS T 8161-2:2020

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Acoustics – Hearing protectors – Part 2: Estimation of effective A-weighted
sound pressure levels when hearing protectors are worn

Published By	Publication Date	Number of Pages
JIS	2020-04-25	27

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Category: JIS

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Description

This Standard 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.

NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 4869-2 : 2018 Acoustics — Hearing protectors — Part 2 : Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.

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