Optimization of TEOAE recording protocols: A linear protocol derived from parameters of a time-frequency analysis: a pilot study on neonatal subjects

S Hatzopoulos , J Cheng , Antoni Grzanka , T Morlet , A Martini


Linear and non-linear TEOAE protocols were compared in terms of nine parameters in order to define the protocol producing recordings with the highest signal quality (lowest noise and highest signal-to-noise ratio). The pilot project acquired data using ILO-92 apparatus from 220 neonates (397 ears) at the second/third day after birth in three European laboratories. A Gabor spectrogram time-frequency representation of the recordings showed considerable frequency dispersion in TEOAE latencies \\textgreater\4.0 ms. The data, analysed with a Wilcoxon test, indicated that a linear TEOAE protocol: (i) generates recordings of a lower noise and a higher signal-to-noise (S/N) ratio in the 2.0, 3.0, 4.0 kHz TEOAE bands; (ii) the increase in the S/N ratio can result in a decrement of the required number of TEOAE sweeps; (iii) the higher values of S/N can be used in the estimation of more robust pass-fail criteria, minimizing the percentage of false positives and negatives.
Author S Hatzopoulos
S Hatzopoulos,,
, J Cheng
J Cheng,,
, Antoni Grzanka (FEIT / PE)
Antoni Grzanka,,
- The Institute of Electronic Systems
, T Morlet
T Morlet,,
, A Martini
A Martini,,
Journal seriesScandinavian Audiology
Issue year2000
URL http://informahealthcare.com/doi/abs/10.1080/010503900424561
Languageen angielski
Score (nominal)0
Citation count*18 (2014-08-28)
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