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PubMed · 142877

[Speech discrimination and dynamic compression. A comparative study with hearing aids (author's transl)].

B Welleschik·W Wicke
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Abstract

A hearing aid with dynamic compression and the very same one without dynamic compression were used for an examination of 13 patients with recruitment who were hard of hearing with respect to sound perception. The maximum degree of speech discrimination possible to be reached was determined. Although in general the hearing aid with dynamic compression yielded better results, the differences between the two aids were, however, small and showed a high scattering range. Thus, we have to draw the conclusion that the lacking 100% speech discrimination in the case of recruitment-positive disorders with respect to sound perception is not due to distorted sound volume dynamics.

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Hearing AidsHearing DisordersHumansRecruitment, NeurophysiologicalComparative StudyEnglish AbstractJournal Article

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B Welleschik, W Wicke. 1977. [Speech discrimination and dynamic compression. A comparative study with hearing aids (author's transl)].. https://pubmed.ncbi.nlm.nih.gov/142877/

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PubMed2006

Fitting strategies and candidature criteria for unilateral and bilateral hearing aid fittings.

In this paper, hearing aid fitting strategies are reviewed and candidature criteria for unilateral and bilateral fittings are discussed. Fitting strategies are primarily governed by the objectives of hearing aid fitting that can be set in different ways. Based on common goals, fitting strategies can be broken down into three stages: (1) basic fitting, (2) fine-tuning and (3) verification and validation. A fine-tuning concept basing on so-called meta-controllers is described and the issue of bilateral fitting strategies is discussed. In a first order approach, bilateral hearing aids can be fitted in parallel as unilateral aids, followed by bilateral fine-tuning, making sure that loudness is balanced and overall loudness is accepted. Parallel fitting of bilateral aids is more favourable than sequential fitting to avoid rejection because of a negative experience with unilateral amplification due to difficulties in disadvantageous listening situations. Candidature criteria are presented by means of a flow chart structuring the decision making process and arriving at the conclusion that bilateral fitting should be considered the normal case. If there is any doubt about the benefit of bilateral fitting, a trial with bilateral aids should be performed.

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