BS EN 60645-1:2017规定了设计用于现场的听力计的一般要求 确定相对于标准参考阈值水平的听阈水平 通过心理声学测试方法建立，以及设计用于执行 使用语音材料进行心理声学测试。本标准的目的是确保:a）在给定人耳上进行125 Hz至16 kHz频率范围内的听力测试， 使用符合本标准的不同纯音听力计进行测试，给出 基本相同的结果；b） 所获得的结果代表了耳朵听力之间的有效比较 测试和参考听阈；c） 以标准化的方式向受试者展示演讲材料的方法是 假如这将确保听力测试使用特定的语音信号和 当使用不同的听力计执行时，信号呈现的具体方式 符合本标准，给出基本相同的结果； d） 听力计根据测试信号的范围进行分类， 根据操作模式或其假定的主要用途。购买本文件时可获得的所有当前修订均包含在购买本文件中。

BS EN 60645-1:2017 specifies general requirements for audiometers designed for use in determining hearing threshold levels, relative to standard reference threshold levels established by means of psychoacoustic test methods, and those designed to perform psychoacoustic tests using speech material.The object of this standard is to ensure:a) that tests of hearing in the frequency range 125 Hz to 16 kHz on a given human ear, performed with different pure-tone audiometers which comply with this standard, give substantially the same results;b) that the results obtained represent a valid comparison between the hearing of the ear tested and the reference threshold of hearing;c) that a means of presenting speech material to a subject in a standardized manner is provided. This will ensure that tests of hearing using a specific speech signal and a specific manner of signal presentation, when performed with different audiometers which comply with this standard, give substantially the same results;d) that audiometers are classified according to the range of test signals they present, according to the mode of operation or according to their presumed primary application.All current amendments available at time of purchase are included with the purchase of this document.