The Voice Track multiband single-channel modified Wiener-filter noise reduction system for cochlear implants: patients' outcomes and subjective appraisal. (2nd August 2016)

• Record Type: Journal Article
• Authors: Guevara, Nicolas; Bozorg-Grayeli, Alexis; Bebear, Jean-Pierre; Ardoint, Marine; Saaï, Sonia; Gnansia, Dan; Hoen, Michel; Romanet, Philippe; Lavieille, Jean-Pierre
• Is Part Of: International journal of audiology. Volume 55:Number 8(2016:Aug.)
• Page Start: 431
• Page End: 438
• Publication Date: 2016-08-02
• Subjects: Cochlear implants -- noise reduction -- speech perception -- speech-in-noise -- voice track -- Oticon Medical; Audiology -- Periodicals; Hearing disorders -- Periodicals; Deafness -- Prevention -- Periodicals; Hearing Disorders -- Periodicals; Hearing -- Periodicals; 617.8
• DOI: 10.3109/14992027.2016.1172267
• Languages: English
• ISSNs: 1499-2027

Abstract

Abstract: Objective : The aim of this study was to evaluate the potential improvements of speech perception and sound quality provided by a multiband single channel noise-reduction algorithm based on the modified Wiener-filter adapted to cochlear implant sound processing. Design : This study was a longitudinal trial with a repeated-measures design. Outcome measures were performed on the first day when the noise reduction feature was provided and after a one month habituation period. Objective measures included pure-tone thresholds and vocal audiometry assessments. Speech perception was measured in quiet and in the presence of two types of noise: a stationary speech shaped noise and a two-talker cocktail noise. Subjective sound quality was assessed using a ten item questionnaire. Study Sample : Thirteen post-lingual deaf adults, experienced users of a cochlear implant system, took part in this study. Results : The noise-reduction algorithm provided a benefit for the perception of speech presented in a stationary speech shaped noise and an overall improvement in subjective sound quality ratings. Conclusions : It was shown that a single channel noise reduction system based on a modified Wiener-filter approach can improve speech in noise perception performance and subjective sound quality in cochlear implant patients.