本标准描述了在模拟真实耳朵使用条件下测量助听器的技术。为了进行这些测量，使用标准人体模型和耳朵模拟器来代表典型的助听器佩戴者。给出了测试空间的声学要求以及假人相对于声源的位置。在测试过程中，提出了两种控制入射声场水平的方法。提供了获得辅助增益和插入增益的程序，以确定相对于无辅助条件的声压增加，包括和不包括假人的声学效果。还提供了获取假人上助听器的方向响应作为声源方位角和仰角函数的程序，并根据方向响应计算方向性指数。

This standard describes techniques used to measure hearing aids under simulated conditions of real ear use. For the purpose of these measurements, a standard manikin and ear simulator are used to represent a typical hearing aid wearer. Acoustical requirements of the test space as well as how the manikin is positioned with respect to the sound source are given. Two methods are presented to control the level of the incident sound field during the testing. Procedures are provided to obtain both the aided gain and the insertion gain, in order to determine the increase in sound pressure relative to the unaided condition, with and without the acoustical effect of the manikin. Procedures are also provided to obtain the directional response of the hearing aid on the manikin as a function of azimuth and elevation of the sound source, and to calculate the directivity index from the directional response.