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Träfflista för sökning "WFRF:(Engdahl B) srt2:(2000-2004)"

Sökning: WFRF:(Engdahl B) > (2000-2004)

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  • Janusauskas, A, et al. (författare)
  • Detection of transient-evoked otoacoustic emissions and the design of time windows
  • 2002
  • Ingår i: IEEE Transactions on Biomedical Engineering. - : Institute of Electrical and Electronics Engineers (IEEE). - 1558-2531 .- 0018-9294. ; 49:2, s. 132-139
  • Tidskriftsartikel (refereegranskat)abstract
    • A new approach to the design of time windows is presented for detection of transient-evoked otoacoustic emissions (TEOAE). The windows are designed with reference to a minimum mean square error criterion involving the correlation properties of the ensemble of responses. Latency information is introduced in the detection process by windowing at different scales that result from wavelet decomposition. The significance of both subject- and population-specific time windows is investigated. The detection performance is evaluated on a health screen database consisting of 4989 records. The results show that the present Approach to windowing yields a significantly better performance in separating normal-hearing subjects from hearing-impaired subjects when compared to detection based on unwindowed signals. With time windowing, the specificity increased with almost 15% at a fixed sensitivity of 90%.
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  • Janusauskas, A., et al. (författare)
  • Otoacoustic emissions and improved pass/fail separation using wavelet analysis and time windowing
  • 2001
  • Ingår i: Medical & Biological Engineering & Computing. - 0140-0118. ; 39:1, s. 134-139
  • Tidskriftsartikel (refereegranskat)abstract
    • A new method is presented for the purpose of improving pass/fail separation during transient evoked otoacoustic emission (TEOAE) hearing screening. The method combines signal decomposition in scales using the discrete wavelet transform, non-linear denoising and scale-dependent time windowing. The cross-correlation coefficient between two subaveraged, processed TEOAE signals is used as a pass/fail criterion and assessed in relation to the pure-tone, mean hearing level. The performance is presented in terms of receiver operating characteristics for a database of 5214 individuals. The results show that the specificity improves from 68% to 83% at a sensitivity of 90% when compared with the conventional wave reproducibility parameter.
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  • Resultat 1-7 av 7

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