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Time-frequency analysis of click-evoked otoacoustic emissions in noise-induced hearing loss

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3 Author(s)
Tognola, G. ; Centre of Biomed. Eng., CNR, Milano, Italy ; Grandori, F. ; Ravazzani, P.

Click-evoked otacoustic emissions (CEOAEs) were recorded from 15 ears with noise-induced hearing loss (NIHL). To identify hearing loss in a frequency-specific manner, CEOAEs were decomposed into narrow band components by means of the wavelet transform. Test-retest reproducibilty of CEOAE components was compared with the audiometric threshold at corresponding frequencies. Agreement between conventional pure-tone audiometry and CEOAEs was found. A general trend of low reproducibility for increasing audiometric thresholds was observed. The presence of a CEOAE component at a given frequency was always associated with audiometric thresholds ⩽20-25 dB HL

Published in:

[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint  (Volume:2 )

Date of Conference:

Oct 1999