由于被微音电位（ＣＭ）覆盖，持续声诱发的复合听神经动作电位（ＣＡＰ）很不易被记录和辨认，而短的瞬态声又只能是宽频的，频率特异性较差，因此，要在耳蜗水平测定真正的纯音听阈甚为困难。本工作用调幅纯音作刺激声，可以方便地把ＣＡＰ和ＣＭ分离，并测定其阈值。由于在 Due to being covered by the microphones (CM), the continuous acoustic evoked compound auditory nerve action potential (CAP) is hard to record and identify, whereas the short transient sound is only broadband and poorly frequency-specific It is very difficult to measure the true pure tone hearing threshold at the cochlear level. This work with amplitude modulation pure tone for stimuli, you can easily separate CAP and CM, and determine the threshold. Because of