GB/T 7584.2-2026 Active National standards

GB/T 7584.2-2026 Acoustics—Hearing protectors—Part 2:Estimation of effective A-weighted sound pressure levels when hearing protectors are worn

Publish Date: 2026-02-27 Implement Date: 2026-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 75

Out of stock

Basic Information

Standard Code: GB/T 7584.2-2026

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Labor protective gear

ICS Name: Head protection equipment

Publish Date: 2026-02-27

Implement Date: 2026-09-01

Pages: 24 pages

Scope

This document describes three methods (the octave band method, the HML method, and the SNR method) for estimating the effective A-weighted sound pressure level when wearing hearing protection. These three methods are applicable to both the sound pressure level of noise and the equivalent continuous sound pressure level of noise. The methods specified in this document are primarily suitable for steady-state noise exposure, as well as noise containing pulse components. This document may not be suitable for measuring peak sound pressure levels.
The octave band value, H value, M value, L value, or SNR value are suitable for establishing sound attenuation evaluation standards, so as to facilitate the selection and comparison of hearing protectors, and to set minimum requirements for sound attenuation.