Investigating the periodicity of transient-evoked otoacoustic emission envelopes

Sarah Verhulst

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


This study investigates the cochlear origin of the multiple temporal lobes that are often observed in the transient-evoked otoacoustic emission (TEOAE) envelope. This "waxing and waning" of the OAE amplitude can be observed in tone-burst (TB) OAEs and sometimes also in click-evoked (CE) OAEs. TBOAE envelopes were analyzed for several frequency and level configurations to investigate the relation between the envelope periodicity and the characteristic frequency of the emission component. It was found that the TBOAE envelope periodicity was dominated by the modulation caused by the interaction of several CEOAE and SOAE frequency components close to the stimulus frequency. A second and smaller TBOAE envelope component showed a qualitative agreement with envelope periods predicted by a model based on multiple cochlear reflections. Multiple reflections between the frequency components in the TBOAE and the middle-ear boundary may contribute to the TBOAE envelope periodicity, but were not the main modulation component in waxing and waning of the investigated TBOAEs.
Original languageEnglish
Title of host publicationProceedings of Forum Acusticum 2011
Publication date2011
ISBN (Electronic)978-84-694-1520-7
Publication statusPublished - 2011
EventForum Acusticum 2011 - Aalborg, Denmark
Duration: 26 Jun 20111 Jul 2011


ConferenceForum Acusticum 2011
Internet address


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