Detection of Hearing Loss in Audiological Frequencies from Transient Evoked Otoacoustic Emissions
Författare
Summary, in English
Transient evoked otoacoustic emissions (TEOAEs) have been analyzed for objective assessment of hearing function and monitoring of the influence of noise exposure and ototoxic drugs. This paper presents a novel application of the Hilbert-Huang transform (HHT) for detection and time-frequency mapping of TEOAEs. Since the HHT does not distinguish between signal and noise, it is combined with ensemble correlation in order to extract signal information in intervals with correlated activity. High resolution time-frequency mapping could predict 30 dB(HL), or higher hearing loss, at different audiological frequencies in 63-90% of the cases and normal hearing in 75-90% of the cases. The proposed method offers TEOAE time-frequency mapping by constraining the analysis to regions with high signal-to-noise ratios. The results suggest that the HI-IT is suitable for hearing loss detection at individual frequencies and characterization of the fine structures of TEOAEs.
Publiceringsår
2010
Språk
Engelska
Sidor
191-204
Publikation/Tidskrift/Serie
Informatica
Volym
21
Issue
2
Dokumenttyp
Artikel i tidskrift
Förlag
Slovenian Society Informatika
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- objective hearing level estimation
- time-frequency mapping
- Hilbert transform
- signal processing
- empirical mode decomposition
- emissions
- otoacoustic
Status
Published
Forskningsgrupp
- Signal Processing
ISBN/ISSN/Övrigt
- ISSN: 0868-4952