电声学测听设备第6部分:耳声发射测量仪器

[中文适用范围]： 本IEC 60645标准第6部分适用于主要用于测量由声学探测刺激诱发的外耳道内耳声发射的仪器。本文件定义了制造商应规定的特性，规定了两种类型仪器的最低强制性功能，并提供了适用于两种仪器类型的性能规范。本文件描述了用于证明符合本文件规范的方法，并提供了关于定期校准方法的指导。本文件的目的是确保在不同仪器下，在可比的测试条件下进行的测量具有一致性。仪器可以提供本文件范围之外但未具体规定的测量功能，同时仍符合本文件的相关要求。本文件旨在不限制新功能的开发或整合，也不阻碍创新方法。 [外文原描述]： IEC 60645-6:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 606045-6:2022 applies to instruments designed primarily for the measurement of otoacoustic emissions in the human external auditory meatus evoked by acoustic probe stimuli. This document defines the characteristics to be specified by the manufacturer, specifies minimum mandatory functions for two types of instruments and provides performance specifications applicable to both instrument types. This document describes methods to be used to demonstrate conformance with the specifications in this document and guidance on methods for periodic calibration. The purpose of this document is to ensure that measurements made under comparable test conditions with different instruments complying with this document will be consistent. Instruments can provide a measurement function not specifically within the scope of this document and still comply with the relevant requirements of this document for the functions that are within the scope. This document is not intended to restrict development or incorporation of new features, nor to discourage innovative approaches. IEC 606045-6:2022 cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the nominal test frequency used in DPOAE is now defined as the higher of the two frequencies, f2; b) the permitted deviation of the stimulus signal for TEOAE has been specified; c) the frequency range for DPOAE stimulus signals has been redefined, d) the stimulus level requirements for TEOAE have been redefined; e) the stimulus level requirements for DPOAE have been redefined; f) the harmonic distortion requirements for DPOAE have been redefined; g) a minimum measurement range for DPOAE has been added.