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耳声发射（Ｏｔｏａｃｏｕｓｔｉｃ Ｅｍ ｉｓｓｉｏｎｓ，ＯＡＥｓ）是目前对外周听觉系统是否完好无损评价的客观指标。在瞬态刺激诱发耳声发射（Ｔｒａｎｓｉｅｎｔ Ｅｖｏｋｅｄ ＯＡＥｓ，ＴＥＯＡＥｓ）的初始部分通常混杂有刺激伪迹成分（主要指耳道对刺激声直接反射的回声），它阻碍了具有短潜伏期的高频耳蜗响应，这就使得ＯＡＥｓ的测量在临床使用中受到了很多的限制。我们提出了一种基于离散小波变换预处理的去除伪迹方法，该方法不仅能够有效地去除刺激伪迹，而且能够有效的提高耳声发射的信噪比。
Otoacoustic Em issions (OAEs) are objective indicators of whether intact peripheral auditory systems are intact or not. The initial part of transient-induced evoked emissio-sions (TEOAEs) are often mixed with stimulus artifact components (mainly the echoes direct reflection of the auditory stimuli by the auditory canal), hindering the high-frequency cochlear response with short latency , Which makes the measurement of OAEs in clinical use has been a lot of restrictions. We propose a removal artifact method based on discrete wavelet transform preprocessing, which not only can effectively remove the stimulation artifacts, but also can effectively improve the signal to noise ratio of otoacoustic emissions.