Evaluation of a transient noise reduction algorithm in cochlear implant users

  • Karl-Heinz Dyballa | Dyballa.Karl-Heinz@mh-hannover.de Department of Otolaryngology, Hannover Medical School and Cluster of Excellence Hearing4all, Germany.
  • Phillipp Hehrmann European Research Center Advanced Bionics, Hannover, Germany.
  • Volkmar Hamacher European Research Center Advanced Bionics, Hannover, Germany.
  • Waldo Nogueira Department of Otolaryngology, Hannover Medical School and Cluster of Excellence Hearing4all, Germany.
  • Thomas Lenarz Department of Otolaryngology, Hannover Medical School and Cluster of Excellence Hearing4all, Germany.
  • Andreas Büchner Department of Otolaryngology, Hannover Medical School and Cluster of Excellence Hearing4all, Germany.

Abstract

Dealing with environmental noises presents a major issue for cochlear implant (CI) users. Hence, digital noise reduction (DNR) schemes have become important features of CI systems. Many noises like for example clinking glasses or slamming doors, have impulsive onsets and decay quickly. Common DNR algorithms cannot handle this type of noise in an appropriate way. In this study, we investigated the effect of an algorithm specially designed for such noises with 12 CI users (age range: 45 to 75 years). Speech scores in noise and quiet as well as subjective ratings of speech clarity, comfort and overall preference were measured. The main finding was a significant improvement of up to 1.7 dB of the speech reception threshold in noise as well as increased speech clarity. Speech in quiet was not negatively affected by the algorithm. The study revealed that the tested algorithm has the potential to improve CI listening. However, further research is needed regarding the effectiveness and suitability of the algorithm in daily use.

Dimensions

Altmetric

PlumX Metrics

Downloads

Download data is not yet available.
Published
2015-06-11
Info
Issue
Section
Original Articles
Keywords:
transient, impulsive noise, noise reduction, cochlear implant, speech intelligibility.
Statistics
  • Abstract views: 1884

  • PDF: 999
  • HTML: 793
How to Cite
Dyballa, K.-H., Hehrmann, P., Hamacher, V., Nogueira, W., Lenarz, T., & Büchner, A. (2015). Evaluation of a transient noise reduction algorithm in cochlear implant users. Audiology Research, 5(2). https://doi.org/10.4081/audiores.2015.116