ANSI/ASA 3.55/IEC 60318的这一部分规定了一种耳模拟器，用于在20 Hz至10 kHz的频率范围内，测量应用于耳朵的超耳式和环耳式耳机（例如用于听力测量和电话测量）。同样的设备也可以用作附加频率高达16 kHz的声学耦合器。该设备具有用于超听觉耳机和不同类型环绕听觉耳机的可选配置。在实践中，必要时可以通过使用适配器来实现替代配置。超过10 kHz时，耳上和耳外耳机的重复性可能会显著降低。

This part of ANSI/ASA 3.55 /IEC 60318 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. This same device can be used as an acoustic coupler at additional frequencies up to 16 kHz.This device has alternative configurations for supra-aural earphones and different types of circumaural earphones. In practice, the alternative configurations can be realized through the use of adapters where necessary.Repeatability for supra-aural and circumaural earphones may get significantly worse above 10 kHz.