ISO 12999-2:2020

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.

Status
: Published

Publication date
: 2020-06
Edition
: 1

Number of pages
: 8
Technical Committee
: ISO/TC 43/SC 2 Building acoustics
ICS
:
17.140.01 Acoustic measurements and noise abatement in general

91.120.20 Acoustics in building. Sound insulation