IEC 60318-1:20 09规定了一种耳朵模拟器，用于在20Hz至10kHz的频率范围内测量应用于耳朵而没有声音泄漏的耳上和耳周耳机（例如用于测听和电话测量）。相同的设备可以用作高达16 kHz的附加频率下的声学耦合器。第二版取消并取代了1998年出版的第一版，并取代了1998年出版的IEC 60318-2。它构成技术修订。与上一版相比，此版本包括以下重大技术变更: -将所述频率范围扩展至16kHz； -声学传递阻抗的修订规范，包括公差； -用于测量声传递阻抗的方法； -扩大测量不确定度。

IEC 60318-1:2009 specifies an ear simulator for the measurement of supra-aural and circumaural earphones (used for example in audiometry and telephonometry) applied to the ear without acoustical leakage, in the frequency range from 20 Hz to 10 kHz. The same device can be used as an acoustic coupler at additional frequencies up to 16 kHz. This second edition cancels and replaces the first edition published in 1998 as well as replacing IEC 60318-2, published in 1998. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- an extension of the frequency range to 16 kHz;
- a revised specification for the acoustical transfer impedance, including tolerances;
- a method for measuring the acoustical transfer impedance;
- expanded measurement uncertainties.