Title :
Time-frequency analysis of click-evoked otoacoustic emissions in noise-induced hearing loss
Author :
Tognola, G. ; Grandori, F. ; Ravazzani, P.
Author_Institution :
Centre of Biomed. Eng., CNR, Milano, Italy
Abstract :
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
Keywords :
hearing; otoacoustic emissions; time-frequency analysis; wavelet transforms; CEOAE; NIHL; audiometric threshold; click-evoked otoacoustic emissions; ears; frequency-specific manner; low reproducibility; narrow band components; noise-induced hearing loss; pure-tone audiometry; test-retest reproducibility; time-frequency analysis; wavelet transform; Auditory system; Biomedical measurements; Deafness; Ear; Frequency measurement; Loss measurement; Reproducibility of results; Testing; Time frequency analysis; Wavelet transforms;
Conference_Titel :
[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
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.804121
