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A Microfluidic Platform for Stimulating Chondrocytes with Dynamic Compression
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Binaural model-based dynamic-range compression.

Stephan M A Ernst1, Steffen Kortlang1, Giso Grimm1,2

  • 1a Medizinische Physik and Cluster of Excellence Hearing4all , Carl-von-Ossietzky Universität Oldenburg , Oldenburg , Germany and.

International Journal of Audiology
|January 28, 2018
PubMed
Summary
This summary is machine-generated.

This study investigated binaural synchronisation in hearing aids, finding no improvement in speech intelligibility but a slight preference for a new algorithm in perceived sound quality. Binaural linking may help preserve natural auditory perception.

Keywords:
Hearing aidsbinauraldynamic compressionspeech perception

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Area of Science:

  • Auditory Neuroscience
  • Hearing Aid Technology
  • Psychoacoustics

Background:

  • Binaural cues like interaural level differences (ILDs) are crucial for organizing auditory perception and segregating sound sources.
  • Independent dynamic-range compression in bilateral hearing aids can distort ILDs, negatively impacting binaural perception and sound source segregation.

Purpose of the Study:

  • To evaluate a binaurally-linked, model-based dynamic compression algorithm designed to mimic normal-hearing basilar membrane function.
  • To assess the impact of binaural synchronisation on speech intelligibility and perceived sound quality in realistic listening conditions.

Main Methods:

  • A multi-center evaluation comparing the proposed algorithm against an alternative binaural and two bilateral fittings.
  • Testing involved 30 hearing-impaired listeners for quality assessment and 12 for speech intelligibility.

Main Results:

  • A slight preference was observed for the proposed model-based algorithm in direct quality comparisons.
  • No significant benefit of binaural synchronisation was found for speech intelligibility, indicating a dominant role of the better ear.

Conclusions:

  • Binaural synchronisation of compression algorithms had a limited effect on tested outcomes.
  • However, binaural linking may offer situational benefits for maintaining natural binaural perception of complex acoustic environments.