IEC 60118-9:20 19规定了骨传导助听器特性的测量方法。 所描述的方法将为信息交换或直接比较骨传导助听器的电声特性提供合适的基础。这些方法被选择为实用和可再现的，并且基于选定的固定参数。 用本文件规定的方法获得的结果表示测量条件下的性能；然而，助听器在实际使用条件下的性能将取决于许多因素(例如，有效负载阻抗、环境条件、声学环境等)。 本文件定义了骨传导助听器特性的测量方法 ？在机械耦合器上测量的经皮耦合器械，符合IEC 60318-6的要求，以及 ？在颅骨模拟器上测量的骨耦合/骨锚定器械。 IEC 60118-9:20 19取消并取代了1985年发布的第一版。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: a)包括在颅骨模拟器上测量的骨耦合装置； b)骨耦合器械的测量频率范围增加至8 000 Hz。

IEC 60118-9:2019 specifies methods for the measurement of bone conduction hearing aid characteristics.
The methods described will produce a suitable basis for the exchange of information or for direct comparison of the electroacoustical characteristics of bone conduction hearing aids. These methods are chosen to be practical and reproducible and are based on selected fixed parameters.
The results obtained by the methods specified in this document express the performance under the conditions of measurement; however, the performance of the hearing aid under practical conditions of use will depend upon a number of factors (e.g. effective load impedance, environmental conditions, acoustical environment, etc.).
This document defines methods of measurement of characteristics of bone conduction hearing aids both for
？ transcutaneously coupled devices measured on a mechanical coupler, meeting the requirements of IEC 60318-6, and
？ bone coupled/bone anchored devices measured on a skull simulator.
IEC 60118-9:2019 cancels and replaces the first edition published in 1985. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) includes bone coupled devices measured on a skull simulator;
b) measurement frequency range increased to 8 000 Hz for bone coupled devices.