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ISO 12999-2:2020

Acoustics — Determination and application of measurement uncertainties in building acoustics — Part 2: Sound absorption

Jun 22, 2020

General information

90.93     Sep 12, 2025

ISO

ISO/TC 43/SC 2

International Standard

17.140.01     91.120.20  

English   French  

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 12999-2:2020
90.93 Standard confirmed
Sep 12, 2025

National adoptions

SRPS EN ISO 12999-2:2020  
ISS

Acoustics - Determination and application of measurement uncertainties in building acoustics - Part 2: Sound absorption (ISO 12999-2:2020)

60.60   Standard published

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