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Related Experiment Videos

Multifocal amplification, a decisive step in recruitment compensation

J Olsen1, C Ahlbom

  • 1Oticon A/S, Hellerup, Denmark.

Revue De Laryngologie - Otologie - Rhinologie
|January 1, 1993
PubMed
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Researchers developed a new non-linear hearing aid, MultiFocus, that compensates for loudness recruitment in sensorineural hearing loss. This advanced hearing aid significantly improves the quality of life for individuals with hearing impairments.

Area of Science:

  • Audiology
  • Biomedical Engineering
  • Hearing Science

Background:

  • Sensorineural hearing loss often involves loudness recruitment, affecting sound perception.
  • Traditional linear hearing aids have limitations in compensating for this condition.

Purpose of the Study:

  • To introduce a novel amplification principle for sensorineural hearing loss.
  • To present the development and benefits of the first fully automatic non-linear hearing aid, MultiFocus.

Main Methods:

  • Development of a new amplification principle.
  • Design and implementation of the MultiFocus hearing aid with non-linear amplification.
  • Comparison of non-linear amplification with traditional linear amplification.

Main Results:

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  • The new non-linear amplification principle effectively compensates for loudness recruitment.
  • MultiFocus hearing aids demonstrate superiority over linear amplification in various aspects.
  • Key benefits include increased listening range and improved speech intelligibility in noise.

Conclusions:

  • The developed non-linear amplification significantly enhances the quality of life for the hearing impaired.
  • The MultiFocus hearing aid allows users to focus on listening rather than the effort of hearing.
  • A new fitting method is required for non-linear hearing aids, presenting a learning curve for fitters.