标准摘要
[中文适用范围]： 本文件规定了适用于纯音气导听力计的听力阈值等级的标准参考零，以促进全世界听力阈值水平测量表达的一致性和统一性。 它以适合直接应用于听力计校准的形式表述信息，即按照 4.2 中规定的通用贴耳式耳机的参考等效阈值声压级，在符合 IEC 60318 的耳模拟器上测量。 1 以及 IEC 60318-3 声耦合器和 IEC 60318-1 耳模拟器的两个附加表中分别给出的模型特定数据。 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注释。 [外文原描述]： 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.
英文名称Acoustics — Reference zero for the calibration of audiometric equipment — Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones