标准编号：ISO 26101:2017
中文名称：声学 自由场环境评定的试验方法
英文名称：Acoustics — Test methods for the qualification of free-field environments
发布日期：2017-04
标准范围
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.
his 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. 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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