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[The Freiburg monosyllabic speech test in noise].

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  • 1Institut für Hörtechnik und Audiologie, Jade Hochschule und Exzellenzcluster "Hearing4All", Ofener Str. 16/19, 26121, Oldenburg, Deutschland. Alexandra.Winkler@jade-hs.de.

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Summary

A new reference speech recognition curve for the Freiburg monosyllabic speech test in noise was established for normal-hearing listeners. This aids in evaluating hearing aid effectiveness and identifying challenging test lists.

Keywords:
Hearing aidsHearing lossPerceptual equivalenceSignal-to-noise ratioSpeech discrimination

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Area of Science:

  • Audiology
  • Speech perception research
  • Hearing aid technology

Background:

  • The Freiburg monosyllabic speech test is used for hearing aid evaluation in Germany since 2017.
  • A reference curve for normal-hearing listeners in noise is currently lacking.
  • This limits the comparison of aided vs. unaided conditions and normative data.

Purpose of the Study:

  • Establish a reference speech recognition curve for normal-hearing listeners using the Freiburg monosyllabic speech test.
  • Analyze the perceptual consistency of test lists in continuous CCITT noise.
  • Provide normative data for hearing aid evaluation.

Main Methods:

  • Conducted measurements at two sites with 90 participants.
  • Presented monosyllables and CCITT noise at various signal-to-noise ratios (S0N0).
  • Fitted individual and test-list discrimination functions to analyze site and list variations.

Main Results:

  • Established a reference speech recognition curve with a defined tolerance region.
  • Identified three test lists (1, 3, 20) that perceptually deviate.
  • Demonstrated the utility of the reference curve for quantifying hearing difficulties.

Conclusions:

  • The reference curve allows for quantifying hearing difficulties and estimating hearing aid rehabilitation.
  • The curve is specific to frontal stimulus presentation (S0N0) and continuous CCITT noise.
  • Perceptually deviating lists in noise differ from those in quiet, aligning partly with existing literature.