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download between 0-24 hoursReleased: 2020
Acoustics — Determination and application of measurement uncertainties in building acoustics — Part 2: Sound absorption
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|Standard´s number:||ISO 12999-2|
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.