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Homepage>BS Standards>17 METROLOGY AND MEASUREMENT. PHYSICAL PHENOMENA>17.140 Acoustics and acoustic measurements>17.140.01 Acoustic measurements and noise abatement in general>BS ISO 26101-1:2021 Acoustics. Test methods for the qualification of the acoustic environment Qualification of free-field environments
immediate downloadReleased: 2021-05-19
BS ISO 26101-1:2021 Acoustics. Test methods for the qualification of the acoustic environment Qualification of free-field environments

BS ISO 26101-1:2021

Acoustics. Test methods for the qualification of the acoustic environment Qualification of free-field environments

CURRENCY
LANGUAGE
English
Standard number:BS ISO 26101-1:2021
Pages:32
Released:2021-05-19
ISBN:978 0 539 15694 2
Status:Standard
DESCRIPTION

BS ISO 26101-1:2021


This standard BS ISO 26101-1:2021 Acoustics. Test methods for the qualification of the acoustic environment is classified in these ICS categories:
  • 17.140.01 Acoustic measurements and noise abatement in general

This document specifies methodology for qualifying acoustic spaces as anechoic and hemi-anechoic spaces meeting the requirements of a free sound field.

This document specifies discrete-frequency and broad-band test methods for quantifying the performance of anechoic and hemi-anechoic spaces, defines the qualification procedure for an omni-directional sound source suitable for free-field qualification, gives details of how to present the results and describes uncertainties of measurement.

This document has been developed for qualifying anechoic and hemi-anechoic spaces for a variety of acoustical measurement purposes. It is expected that, over time, various standards and test codes will refer to this document in order to qualify an anechoic or hemi-anechoic space for a particular measurement. Annex D provides guidelines for the specification of test parameters and qualification criteria for referencing documents.

In the absence of specific requirements or criteria, Annex A provides qualification criteria and measurement requirements to qualify anechoic and hemi-anechoic spaces for general purpose acoustical measurements.

This document describes the divergence loss method for measuring the free sound field performance of an acoustic environment.


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