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Related Experiment Videos

A digital filterbank hearing aid: predicting user preference and performance for two signal processing algorithms

T Lunner1, J Hellgren, S Arlinger

  • 1Department of Otorhinolaryngology, Linköping University, Sweden.

Ear and Hearing
|February 1, 1997
PubMed
Summary
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Hearing aid algorithm preference, DynEar versus LinEar, is linked to an individual's auditory dynamic range. Preferred hearing aid fittings improved speech clarity and sound quality.

Area of Science:

  • Audiology
  • Hearing Science
  • Biomedical Engineering

Background:

  • Hearing aid technology utilizes advanced signal processing to improve audibility.
  • Two distinct low-frequency processing strategies, dynamic range compression (DynEar) and linear processing (LinEar), were compared in wearable digital hearing aids.
  • Auditory dynamic range is a key factor influencing user preference for different hearing aid processing algorithms.

Purpose of the Study:

  • To compare the user preference and performance of two hearing aid algorithms: DynEar and LinEar.
  • To determine if auditory dynamic range data can predict user preference between the two algorithms.
  • To evaluate the impact of algorithm choice on speech-to-noise ratio thresholds and subjective sound quality.

Main Methods:

Related Experiment Videos

  • A one-month blind field test involving 26 hearing aid users with symmetrical sensorineural hearing loss.
  • Objective recording of algorithm usage time and volume control adjustments via a data logger.
  • Subjective assessment of preference based on usage time and qualitative feedback, alongside speech-to-noise ratio threshold testing and sound quality questionnaires.

    • Main Results:

    • Auditory dynamic range data successfully predicted user preference for DynEar or LinEar in 12 out of 15 new cases.
    • Preferred hearing aid fittings resulted in significantly lower speech-to-noise ratio thresholds compared to non-preferred fittings and the users' own conventional aids.
    • Subjective ratings indicated significantly higher overall impression and clearness for the preferred fittings.

    Conclusions:

    • User preference between DynEar and LinEar hearing aid algorithms is significantly influenced by individual auditory dynamic range.
    • Preferred hearing aid fittings demonstrably enhance speech intelligibility and perceived sound quality.