EN ISO 12999-2:2020
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The latest, up-to-date edition.
Acoustics - Determination and application of measurement uncertainties in building acoustics - Part 2: Sound absorption (ISO 12999-2:2020)
08-07-2020
This document specifies how to calculate:— the uncertainty of sound absorption coefficients and equivalent sound absorption areas measured according to ISO 354;— the uncertainty of the practical and weighted sound absorption coefficients determined according to ISO 11654;— the uncertainty of the object sound absorption coefficient according to ISO 20189; and — the uncertainty of the single number rating determined according to EN 1793‑1. Furthermore, the use of uncertainties in reporting measured or weighted sound absorption coefficients is explained.
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