Projects of NA 062-02-31 AA

DIN EN 17823 2021-02-24 Acoustic properties of building elements and of buildings - Laboratory measurement of the impact sound insulation of stairs and stair isolating elements; German and English version prEN 17823:2022 More  Comment 
DIN EN ISO 10534-2 2020-09-28 Acoustics - Determination of acoustic properties in impedance tubes - Part 2: Two-microphone technique for normal sound absorption coefficient and normal surface impedance (ISO/DIS 10534-2:2022); German and Englisch version prEN ISO 10534-2:2022 More  Comment 
ISO/DIS 10534-2 2020-09-17 Acoustics - Determination of acoustic properties in impedance tubes - Part 2: Two-microphone technique for normal sound absorption coefficient and normal surface impedance More  Comment 
DIN EN ISO 354 rev 2018-10-16 Acoustics - Measurement of sound absorption in a reverberation room More  Comment 
ISO/CD 354 2018-10-03 Acoustics - Measurement of sound absorption in a reverberation room More  Comment 

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