IEC 60645-1:2017 电声学 - 听力设备 - 第1部分:纯音和语音听力测量设备

标准编号：IEC 60645-1:2017

中文名称：电声学 - 听力设备 - 第1部分:纯音和语音听力测量设备

英文名称：Electroacoustics - Audiometric equipment - Part 1: Equipment for pure-tone and speech audiometry

发布日期：2017-03-14

标准范围

新的！IEC 60645-1:20 17作为IEC 60645-1:20 17 RLV提供，包含国际标准及其红线版本，显示了与上一版相比技术内容的所有变化。IEC 60645-1:20 17规定了用于确定听力阈值水平的听力计的一般要求，相对于通过心理声学测试方法建立的标准参考阈值水平，以及旨在使用语音材料进行心理声学测试的听力计。本标准的目的是确保:a）用符合本标准不同纯音听力计对给定人耳在125赫兹至16 kHz频率范围内的听力测试给出了基本相同的结果；b)所得结果代表被测试耳朵的听力与参考听力阈值之间的有效比较；c)提供了一种以标准化方式向受试者呈现语音材料的装置。这将确保当使用符合本标准的不同听力计进行时，使用特定语音信号和特定信号呈现方式的听力测试给出基本相同的结果；d）根据听力计所呈现测试信号范围、根据操作模式或根据其假定的主要应用对听力计进行分类。第四版取消并取代了2012年发布的第三版和1993年发布的第一版IEC 60645-2。本版构成技术修订版。此版本现在包括纯音（IEC 60645-1的先前版本）和语音听力计（IEC 60645-1的先前版本）的要求。2）变成一个单据。此版本中的技术要求与前两个文件的意图相似，但现在消除了由适用于听力计的两个不同审查周期的独立标准引起的技术和编辑矛盾。

NEW!IEC 60645-1:2017 is available as IEC 60645-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 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.
This fourth edition cancels and replaces the third edition, published in 2012, and the first edition IEC 60645-2, published in 1993. This edition constitutes a technical revision.
This edition now includes the requirements for both pure-tone (prior edition of IEC 60645-1) and speech audiometers (prior edition of IEC 60645-2) into a single document. The technical requirements in this edition remain similar to the intent of the prior two documents, but now eliminate technical and editorial contradictions caused by two separate standards with different review cycles applying to an audiometer.

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