Comparing Two Hearing Aid Fitting Algorithms for Bimodal Cochlear Implant Users

Ear and Hearing
Jantien L VroegopAndré Goedegebure

Abstract

To investigate the possible advantage of the use of a dedicated bimodal hearing aid fitting formula, the Adaptive Phonak Digital Bimodal (APDB), compared with a frequently used standard hearing aid fitting formula, the NAL-NL2. We evaluated the effects of bimodal hearing aid fitting on provided hearing aid gain and on bimodal auditory functioning in a group of experienced bimodal cochlear implant (CI) users. A second aim of our study was to determine the effect of broadband loudness balancing on the prescribed gain of those two fitting formulas. This prospective study used a crossover design in which two fitting methods were compared varying in basic prescription formula (NAL-NL2 or APDB fitting formula). The study consisted of a three-visit crossover design with 3 weeks between sessions. Nineteen postlingually deafened experienced bimodal CI users participated in this study. Auditory functioning was evaluated by a speech in quiet test, a speech in noise test, and a questionnaire on auditory performance. Significant differences between the two fitting formulas were found for frequencies of 2000 Hz and above. For these frequencies, less gain was provided by the APDB fitting formula compared with NAL-NL2. For the APDB fitting for...Continue Reading

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Citations

Dec 7, 2019·International Journal of Audiology·Frank M DigeserUlrich Hoppe
Aug 19, 2020·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Laura Christine HoltmannStefan Hans
Jun 3, 2021·Audiology Research·Gennaro AulettaElio Marciano

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