GB/T 7584.6-2026 Active National standards

GB/T 7584.6-2026 Acoustics—Hearing protectors—Part 6:Determination of sound attenuation of active noise reduction earmuffs

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

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Basic Information

Standard Code: GB/T 7584.6-2026

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: 16 pages

Scope

This document specifies the test method for active noise reduction (ANR) headphones and the calculation steps to obtain the total sound attenuation. To achieve this goal, it is also necessary to know and measure the sound attenuation in passive mode according to ISO 4869-1. These methods are suitable for steady-state noise exposure, but not for noise containing impulse components.
The test methods in this document use the passive real-ear hearing threshold attenuation (RAET) method and the active real-ear microphone insertion (MIRE) technique specified in ISO 4869-1 and ISO 11904-1 to consider the sound interaction between the wearer and the device.