EN 24869-1 Acoustics - Hearing Protectors - Subjective Method for the Measurement of Sound Attenuation (ISO 4896-1 : 1990)
EN 24869-3 Acoustics - Hearing Protectors - Part 3: Simplified Method for the Measurement of Insertion Loss of Ear-Muff Type Protectors for Quality Inspection Purposes (ISO/TR 4869-3 : 1989)
EN ISO 4869-2 Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:2018)
ISO 11904-1 Acoustics - Determination of sound immission from sound sources placed close to the ear - Part 1: Technique using a microphone in a real ear (MIRE technique); Technical Corrigendum 1
GOST R EN 13819-2-2011 history
2011GOST R EN 13819-2-2011 Occupational safety standards system. Personal hearing protectors. Acoustic test methods