ISO 389-1:2017规定了适用于纯音空气传导听力计的听阈水平刻度的标准参考零点，以促进世界各地听阈水平测量表达的一致性和一致性。 ISO 389-1:2017以适合直接用于听力计校准的形式说明了信息，即4.2中规定的通用超听觉耳机的参考等效阈值声压级，在符合IEC 60318？1的耳模拟器上测量，并根据IEC 60318？3声耦合器和IEC 60318？1耳模拟器的两个附加表格中给出的模型特定数据进行测量。 这些数据基于对负责听力标准的各个标准化实验室和科学出版物提供的信息的评估。 附录A和B中给出了有关参考水平的应用和推导的一些说明。

ISO 389-1:2017 specifies a standard reference zero for the scale of hearing threshold level applicable to pure-tone air conduction audiometers, to promote agreement and uniformity in the expression of hearing threshold level measurements throughout the world. ISO 389-1:2017 states the information in a form suitable for direct application to the calibration of audiometers, that is, in terms of the reference equivalent threshold sound pressure levels of generic supra-aural earphones specified in 4.2, measured on an ear simulator complying with IEC 60318？1 and in terms of model-specific data given in two additional tables for the IEC 60318？3 acoustic coupler and the IEC 60318？1 ear simulator, respectively. The data are based on an assessment of the information available from the various standardizing laboratories responsible for audiometric standards and from scientific publications. Some notes on the application and derivation of the reference levels are given in Annexes A and B.