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API STD 521: Guide for Pressure-relieving and Depressuring Systems – Edition 6

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ISO 12999:2020

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

CDN $124.00

Description

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‚Äë1.

Furthermore, the use of uncertainties in reporting measured or weighted sound absorption coefficients is explained.

Edition

1

Published Date

2020-06-22

Status

PUBLISHED

Pages

8

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

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‚Äë1.

Furthermore, the use of uncertainties in reporting measured or weighted sound absorption coefficients is explained.

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