A study of human DPOAE fine structure

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Abstract

Otoacoustic emissions (OAEs) are a promising method to monitor early noise-induced hearing losses. When distortion product otoaocustic emissions (DPOAEs) are obtained with a high frequency resolution, a ripple structure across frequency can be seen, called DPOAE fine structure. In this study DPOAE fine structures are obtained from 74 normalhearing humans using primary levels of L1/L2=65/45 dB. The subjects belong to groups with different age and exposure history. A classification algorithm is developed, which quantifies the fine structure by the parameters ripple place, ripple width, ripple height and ripple prevalence. Temporary changes of the DPOAE fine structure are analyzed by measuring DPOAE both before and after exposing some of the subjects to an intense sound. The characteristic patterns of fine structure can be found in the DPOAE of all subjects, though they are individual and vary from subject to subject within groups. The results do not indicate that the DPOAE fine structure alters in a simple way with the state of hearing.
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Otoacoustic emissions (OAEs) are a promising method to monitor early noise-induced hearing losses. When distortion product otoaocustic emissions (DPOAEs) are obtained with a high frequency resolution, a ripple structure across frequency can be seen, called DPOAE fine structure. In this study DPOAE fine structures are obtained from 74 normalhearing humans using primary levels of L1/L2=65/45 dB. The subjects belong to groups with different age and exposure history. A classification algorithm is developed, which quantifies the fine structure by the parameters ripple place, ripple width, ripple height and ripple prevalence. Temporary changes of the DPOAE fine structure are analyzed by measuring DPOAE both before and after exposing some of the subjects to an intense sound. The characteristic patterns of fine structure can be found in the DPOAE of all subjects, though they are individual and vary from subject to subject within groups. The results do not indicate that the DPOAE fine structure alters in a simple way with the state of hearing.
Original languageEnglish
Publication date2007
Number of pages1
Publication statusPublished - 2007
Publication categoryResearch
Peer-reviewedNo
EventThe 2007 MidWinter Meeting for the Association for Research in Otolaryngology (ARO) - Denver, Colorado, United States
Duration: 10 Feb 200715 Feb 2007
Conference number: 30

Conference

ConferenceThe 2007 MidWinter Meeting for the Association for Research in Otolaryngology (ARO)
Number30
CountryUnited States
CityDenver, Colorado
Period10/02/200715/02/2007

Bibliographical note

Poster No. 517, session No. Q2: Otoacoustic Emissions 1

ID: 6466432