本标准的目的是规定适用于纯音骨传导测听用骨振动器校准的以下数据:（a）参考等效阈值振动力水平（RETVFL），对应于通过骨传导测听法测定的年轻耳科正常人的听力阈值；（b） 骨振子的基本特征以及与受试者和机械耦合器的耦合方法；和（c）掩蔽噪声的基本特征和应用于未测试耳朵的基线掩蔽噪声水平。

The objective of this Standard is to specify the following data applicable to the calibration of bone vibrators for pure-tone bone-conduction audiometry: (a) reference equivalent threshold vibratory force levels (RETVFL), corresponding to the threshold of hearing of young otologically normal persons by bone-conduction audiometry; (b) essential characteristics of the bone vibrator and the method of coupling to the test subject, and to the mechanical coupler; and (c) essential characteristics of the masking noise and the baseline masking noise level applied to the ear not under test.