ISO-26101 Acoustics - Test methods for the qualification of free-field environments

ISO-26101 - 2ND EDITION - CURRENT
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ISO 26101:2017 specifies methodology for qualifying acoustic spaces as anechoic and hemi-anechoic spaces meeting the requirements of a free sound field.

ISO 26101:2017 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.

ISO 26101:2017 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.

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.

ISO 26101:2017 describes the divergence loss method for measuring the free sound field performance of an acoustic environment.

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Document Number

ISO 26101:2017

Revision Level

2ND EDITION

Status

Current

Publication Date

April 1, 2017

Committee Number

ISO/TC 43