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Development of a home-based auditory training to improve speech recognition on the telephone for patients with cochlear implants: A randomised trial

  • Objectives: Speech recognition on the telephone poses a challenge for patients with cochlear implants (CIs) due to a reduced bandwidth of transmission. This trial evaluates a home-based auditory training with telephone-specific filtered speech material to improve sentence recognition. Design: Randomised controlled parallel double-blind. Setting: One tertiary referral centre. Participants: A totalObjectives: Speech recognition on the telephone poses a challenge for patients with cochlear implants (CIs) due to a reduced bandwidth of transmission. This trial evaluates a home-based auditory training with telephone-specific filtered speech material to improve sentence recognition. Design: Randomised controlled parallel double-blind. Setting: One tertiary referral centre. Participants: A total of 20 postlingually deafened patients with CIs. Main outcome measures: Primary outcome measure was sentence recognition assessed by a modified version of the Oldenburg Sentence Test filtered to the telephone bandwidth of 0.3-3.4 kHz. Additionally, pure tone thresholds, recognition of monosyllables and subjective hearing benefit were acquired at two separate visits before and after a home-based training period of 10-14 weeks. For training, patients received a CD with speech material, either unmodified for the unfiltered training group or filtered to the telephone bandwidth in the filtered group. Results: Patients in the unfiltered training group achieved an average sentence recognition score of 70.0%±13.6% (mean±SD) before and 73.6%±16.5% after training. Patients in the filtered training group achieved 70.7%±13.8% and 78.9%±7.0%, a statistically significant difference (P=.034, t10 =2.292; two-way RM ANOVA/Bonferroni). An increase in the recognition of monosyllabic words was noted in both groups. The subjective benefit was positive for filtered and negative for unfiltered training. Conclusions: Auditory training with specifically filtered speech material provided an improvement in sentence recognition on the telephone compared to training with unfiltered material.show moreshow less

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Author:Stefan ZirnORCiDGND
Year of Publication:2017
Date of first Publication:2017/12/01
Language:English
Tag:audiometry; auditory training; cochlear implants
DDC classes:600 Technik, Medizin, angewandte Wissenschaften
Parent Title (English):Clinical Otolaryngology
Volume:42
Issue:6
ISSN:1749-4486
First Page:1303
Last Page:1310
Document Type:Article (reviewed)
Institutes:Bibliografie
Release Date:2018/01/10
Licence (German):License LogoCreative Commons - Namensnennung
URL:http://onlinelibrary.wiley.com/doi/10.1111/coa.12871/abstract;jsessionid=7E86A08FA5B55185146129D260AFB34A.f04t04
DOI:https://doi.org/10.1111/coa.12871