Speech perception in various acoustic environments: Comparison of different sound coding strategies
- Authors: Kolokolov O.V.1, Kuznetsov A.O.2,3, Machalov A.S.2,3, Vladimirova T.Y.4, Koshel I.V.5
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Affiliations:
- The National Medical Research Center for Otorhinolaryngology of the Federal Medico-Biological Agency
- The National Medical Research Center for Otorhinolaryngology of the Federal Medico-Biological Agency
- Pirogov Russian National Research Medical University
- Samara State Medical University
- Stavropol State Medical University
- Issue: Vol 6, No 4 (2021)
- Pages: 14-18
- Section: ENT Disorders
- URL: https://journals.rcsi.science/2500-1388/article/view/83088
- DOI: https://doi.org/10.35693/2500-1388-2021-6-4-14-18
- ID: 83088
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Abstract
Objectives – to compare speech perception in a quiet and noisy environment using a basic audio coding strategy (CIS) and a modern strategy (ACE) over a period of 24 months.
Material and methods. The study involved 30 patients who received hearing rehabilitation in the National Medical Research Center for Otorhinolaryngology of the Federal Medico-Biological Agency in the period of 2018 – 2021. The inclusion criteria were: implantation in the adult age (from 18 to 45 years), speaking fluent Russian, hearing loss after speech skills formation. After initialization and programming of the speech processor, the patients underwent speech audiometry in a free sound field using syllabic and speech tables in silence and noise. The results were collected in the special MS Excel templates and subjected to statistical analysis.
Results. The intelligibility of syllables in patients with CIS and ACE strategies took comparable values and grew with experience within 24 months (from 52 ± 7.00% at the beginning of the study to 72 ± 7.25% at the end), the greatest increase in intelligibility was noted in the first 3 months after connecting the speech processor (from 52 ± 7.00% to 66 ± 7.87%). Using the Greenberg speech table in silence, the groups with the CIS strategy and the ACE strategy obtained similar results with a slight advantage of the ACE strategy up to 6 months of the study. Later, a significantly higher increase in speech perception was observed in the group with the ACE strategy compared to the group with CIS. After 12 months, the perception tests showed 67 ± 8.62% in patients with CIS strategy and 71 ± 7.54% in patients with ACE, after 24 months the results were 68 ± 9.12%, and 72 ± 8.62% respectively. Under noise conditions, we observed an increase of the difference between groups starting from 6 months (41 ± 5.33% in patients with CIS versus 43.3 ± 7.55% with ACE), the largest difference was registered after 24 months (51 ± 5.50% versus 57 ± 8.25% respectively).
Conclusion. When compared to the basic strategy, a modern sound coding strategy with a higher resolution can improve speech perception especially with complex speech patterns and in a noisy environment.
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##article.viewOnOriginalSite##About the authors
Oleg V. Kolokolov
The National Medical Research Center for Otorhinolaryngology of the FederalMedico-Biological Agency
Author for correspondence.
Email: surdologiya_scco@mail.ru
ORCID iD: 0000-0002-7155-9544
external PhD student, Head of the polyclinic department
Russian Federation, AstrakhanAleksandr O. Kuznetsov
The National Medical Research Center for Otorhinolaryngology of the Federal Medico-Biological Agency; Pirogov Russian National Research Medical University
Email: aokuznet@mail.ru
ORCID iD: 0000-0001-6499-7506
PhD, Chief Physician; Associate professor, Department of Otorhinolaryngology
Russian Federation, MoscowAnton S. Machalov
The National Medical Research Center for Otorhinolaryngology of the Federal Medico-Biological Agency; Pirogov Russian National Research Medical University
Email: anton-machalov@mail.ru
ORCID iD: 0000-0002-5706-7893
PhD, Head of Scientific-clinical department of audiology, hearing aid and audio-verbal rehabilitation; physician-audiologist-otolaryngologist; Associate professor of the Department of Otorhinolaryngology, Faculty of Continuing professional education
Russian Federation, MoscowTatyana Yu. Vladimirova
Samara State Medical University
Email: vladimirovalor@yandex.ru
ORCID iD: 0000-0003-1221-5589
PhD, Associate рrofessor, Head of the Otorhinolaryngology Department and Clinic named after academician I.B. Soldatov
Russian Federation, SamaraIvan V. Koshel
Stavropol State Medical University
Email: Koshel1979@mail.ru
ORCID iD: 0000-0002-9337-8592
PhD, Professor, Acting Head of the Department of Otorhinolaryngology, Plastic Surgery with the course of Continuing professional education
Russian Federation, StavropolReferences
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