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Ocena percepcji mowy w funkcji zaprogramowanej ilości maksimów spektralnych u pacjentów dorosłych z implantem ślimakowym

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Stieler O., Obrębowska Z.
Polish Journal of Otolaryngology
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2008
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vol. 62
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issue 6
769-772
EN
Subjects. 11 adults cochlear implant users, age since 18 till 70 years old (mean 43); 6 male and 5 female; diagnosis-postlingual deafness; used CI over 3 years. Method. The aim of study was evaluation of an optimal number of spectral speech coding maxima. The speech audiometry in free fi eld for programmed 8, 10 and 12 spectral maxima and subjective evaluation of quality of speech perception in different acoustic environmental were performed. Results. Results of the study showed the better speech intelligibility for programmed 8 (approx. 54%) and 10 spectral maxima (27%). Conclusion. The number of speech spectral maxima over 10 is not necessary to increasing of speech intelligibility. In the BTE (behind the ear) speech processor the power consumtion were important reduced for 8 spectral maxima. Application of 810 number of maxima is optimal in fi rst session (switch-on) programming of speech processor.
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Evaluation of phoneme perception based on the digitalized phoneme test in children with cochlear implants

100%
Stieler O., Sekula A.
Polish Journal of Medical Physics And Engineering
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2009
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vol. 15
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issue 3
135-141
EN
Early diagnosis of congenital defect of hearing poses new challenges for a multidisciplinary team of pedoaudiologists, ENT (ear-nose-throat) specialists and speech therapists. This study assessed the perception of phonemes in children with a cochlear implant and the possibilities of applying acoustical solutions in the audiologic evaluation. The participants were 17 implanted children, aged 5-9 years, who received a cochlear implant when they were from 18 months to 3 years old. Detection thresholds and discrimination score were assessed. This study also aimed at verifying the possibilities of applying the digital audioprocessing algorithm in clinical practice. The test based on the phonemes aa, uu, ii, ss, sh (Ling 5 sound test) was used. The test was modified in the frequency domain - the main aim of this modification was to improve the precision of the reconstruction of the audible threshold. The results indicated significant correlations between pure tone audiometry results and thresholds of phoneme detection [dB SPL]. The identification score in this group was 95-100% for sound pressure level 65 dB SPL.
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