Section of Physiological Acoustics and Communication, Department of Otolaryngology, Eberhard-Karls-University Tübingen, Elfriede-Aulhorn-Strasse 5, 72076 Tübingen, Germany.
J Acoust Soc Am. 2013 Jul;134(1):EL64-9. doi: 10.1121/1.4809772.
Distortion product otoacoustic emissions (DPOAEs) acquired in normal-hearing subjects show considerable variation in amplitude with varying frequency. This is known as DPOAE fine structure. It is widely accepted that fine structure results from wave interference from two DPOAE sources, a non-linear generation component and a coherent reflection component. Here a method is presented that decomposes short-pulse DPOAE recordings into pulse basis functions and enables the quantification of both source components in the time domain, independent of their relative phase and at low cost of measurement time. Input-output functions utilizing the extracted primary-source component are analyzed.
正常听力受试者的畸变产物耳声发射（DPOAE）的幅度随频率的变化而有很大的变化。这被称为 DPOAE 精细结构。人们普遍认为，精细结构是由两个 DPOAE 源的波干涉产生的，一个是非线性产生分量，另一个是相干反射分量。本文提出了一种方法，可以将短脉冲 DPOAE 记录分解为脉冲基函数，并在时域中对两个源分量进行定量分析，而无需考虑它们的相对相位，且测量时间的成本也很低。对提取的原始源分量的输入-输出函数进行了分析。
