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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Perceptual dereverberation in listeners with normal-hearing and cochlear implants.

Finn S Holtrop1, Ilse Y Haan1, Jorn Sangers1

  • 1Department of Otolaryngology - Head and Neck Surgery, Ear & Hearing, Amsterdam Public Health research institute, Amsterdam UMC Location University of Amsterdam, Amsterdam, 1081 HV, the Netherlands.

Hearing Research
|March 4, 2026
PubMed
Summary

Normal-hearing listeners can use perceptual dereverberation to improve speech recognition in reverberant environments. This effect, where preceding sounds reduce reverberation

Keywords:
Cochlear implantsNoise adaptationPerceptual dereverberationReverberation

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Area of Science:

  • Auditory Perception
  • Speech Processing
  • Acoustics

Background:

  • Reverberation significantly degrades speech recognition, posing challenges in various acoustic environments.
  • Perceptual dereverberation is a phenomenon where preceding non-target speech can improve target speech intelligibility in reverberation.
  • Understanding dereverberation is crucial for developing assistive listening devices and auditory training programs.

Purpose of the Study:

  • To investigate perceptual dereverberation in normal-hearing (NH) adults and cochlear implant (CI) users.
  • To quantify the extent of speech recognition improvement due to perceptual dereverberation.
  • To compare the effects of perceptual dereverberation with adaptation to masking noise.

Main Methods:

  • Employed a within-subject repeated measures design with simulated reverberation and noise.
  • Assessed speech recognition using digit triplet and consonant-vowel-consonant word tasks.
  • Compared recognition with full stimuli versus stimuli containing only the final word or digit(s).

Main Results:

  • NH listeners showed significant speech recognition improvement (26.5 RAU for digits, 9.0 RAU for words) with perceptual dereverberation.
  • Recognition improvements in reverberation were larger than those observed with masking noise.
  • CI users demonstrated a similar, though potentially confounded, improvement (18.6 RAU) in digit recognition.

Conclusions:

  • Normal-hearing listeners effectively utilize perceptual dereverberation to enhance speech recognition in reverberant conditions.
  • The findings suggest a distinct mechanism for dereverberation compared to noise adaptation.
  • Further research is needed to confirm dereverberation effects in CI users and explore underlying mechanisms.