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Related Experiment Videos

High rate otoacoustic emissions

A R Thornton1

  • 1MRC Institute of Hearing Research, Royal South Hants Hospital, Southampton, United Kingdom.

The Journal of the Acoustical Society of America
|July 1, 1993
PubMed
Summary
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Testing young children with evoked otoacoustic emissions (EOAEs) is challenging due to the need for quiet. A new maximum length sequences (MLS) method significantly reduces testing time to mere seconds, improving efficiency for auditory assessments.

Area of Science:

  • Audiology
  • Otoacoustic Emissions
  • Signal Processing

Background:

  • Evoked otoacoustic emissions (EOAEs) are crucial for infant hearing screening.
  • Current EOAE testing requires prolonged quiet periods in children, often exceeding 10 minutes.
  • This extended duration poses a practical challenge for testing young, restless subjects.

Purpose of the Study:

  • To introduce a novel application of maximum length sequences (MLS) for rapid EOAE measurement.
  • To reduce the testing time for EOAEs from minutes to seconds.
  • To assess the feasibility and efficacy of this new technique in both neonates and adults.

Main Methods:

  • Utilized maximum length sequences (MLS) for EOAE signal generation and analysis.
  • Applied MLS technique to obtain EOAE data from adult and neonate participants.

Related Experiment Videos

  • Stimulation rates up to 840 clicks/s were employed during testing.

    • Main Results:

    • The MLS method successfully acquired EOAE data in a few seconds or less.
    • Data obtained using MLS were compared with conventionally derived EOAEs.
    • The new method demonstrated comparable results to traditional techniques, even at high stimulation rates.

    Conclusions:

    • The MLS application offers a significantly faster method for EOAE testing.
    • This innovation addresses the practical challenge of obtaining reliable EOAEs in young children.
    • The rapid EOAE measurement has broad implications for clinical audiology and hearing screening protocols.