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Published on: August 22, 2017
Comparison of time-domain source-separation techniques for short-pulse distortion-product otoacoustic emissions
Dennis Zelle1, Ernst Dalhoff1, Anthony W Gummer1
1Section of Physiological Acoustics and Communication, Department of Otolaryngology, Eberhard-Karls-University Tübingen, Elfriede-Aulhorn-Strasse 5, 72076 Tübingen, Germany dennis.zelle@uni-tuebingen.de, ernst.dalhoff@uni-tuebingen.de, anthony.gummer@uni-tuebingen.de.
Abstract:
Distortion-product otoacoustic emissions (DPOAEs) are presumed to consist mainly of two components, a nonlinear-distortion component and a coherent-reflection component. Wave interference between these two components reduces the accuracy of DPOAEs when used to evaluate cochlear function. Here, short tone pulses are utilized to record DPOAE signals in normal-hearing subjects. DPOAE components are extracted from recordings at discrete frequencies using two different techniques in the time domain. The extracted DPOAE components are compared to recordings obtained with conventional, continuous primary tones.
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