标准摘要
[中文适用范围]： 本文件规定了将声学空间鉴定为满足自由声场要求的消声和半消声空间的方法。 本文件规定了用于量化消声和半消声空间性能的离散频率和宽带测试方法，定义了适合自由场鉴定的全向声源的鉴定程序，详细说明了如何呈现结果并描述测量的不确定度。 本文件的开发目的是为了验证消声和半消声空间的各种声学测量目的。 预计随着时间的推移，各种标准和测试规范将参考本文件，以便对特定测量的消声或半消声空间进行资格鉴定。 附件 D 提供了测试参数规范和参考文件的资格标准的指南。 在没有具体要求或标准的情况下，附件 A 提供了资格标准和测量要求，以鉴定消声和半消声空间是否适合通用声学测量。 本文件描述了用于测量声学环境的自由声场性能的发散损失方法。 [外文原描述]： 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.
英文名称Acoustics — Test methods for the qualification of the acoustic environment — Part 1: Qualification of free-field environments