瞬态诱发耳声发射的能量分布图

耳声发射是近年来耳科界研究的热点。文章提出以小波变换提取不同尺度下瞬态诱发耳声发射（ＴＥＯＡＥ）的小波信号，并以其平均能量作为特征参数，建立了ＴＥＯＡＥ能量分布图，为ＴＥＯＡＥ的定量频率分析提供新手段。ＴＥＯＡＥ能量分布图以正常人的平均能量作为０ｄＢ，以单侧５％位数作为９５％正常值范围，它体现了能量的损失情况，便于与纯音测听的结果相比较。ＴＥＯＡＥ能量分布图的建立，说明ＴＥＯＡＥ信号也包含了定量的频率信息，并提供了其定量分析的有效手段，有较好的临床应用前景

ENERGY DISTRIBUTION OF TRANSIENT EVOKED OTOACOUSTIC EMISSION

Otoacoustic emission is a hot spot of research in Otolaryngology. Transient evoked otoacoustic emission was thought to be in lack of frequency resolution. To overcome this limitation, the authors analyzed TEOAE signal with wavelet transform. An energy distribution was obtained by extracting the average energy from the different scales of wavelet. TEOAE energy distribution takes the average energy of the normal hearing persons as 0 dB, and 5% percentage at single side as the 95% normal value range. TEOAE energy distribution represents the energy loss and is convenient for the comparison to the pure tone audiogram. This paper shows that quantitative frequency information can be extracted from TEOAE. The method used in this paper provides an effective means to analize TEOAE quantitatively and may be applied to the clinical work.