Error Patterns Analysis of Hearing Aid and Cochlear Implant Users as a Function of Noise

Journal of Audiology & Otology
Hyungi ChunYoungmyoung Chun

Abstract

Not all impaired listeners may have the same speech perception ability although they will have similar pure-tone threshold and configuration. For this reason, the present study analyzes error patterns in the hearing-impaired compared to normal hearing (NH) listeners as a function of signal-to-noise ratio (SNR). Forty-four adults participated: 10 listeners with NH, 20 hearing aids (HA) users and 14 cochlear implants (CI) users. The Korean standardized monosyllables were presented as the stimuli in quiet and three different SNRs. Total error patterns were classified into types of substitution, omission, addition, fail, and no response, using stacked bar plots. Total error percent for the three groups significantly increased as the SNRs decreased. For error pattern analysis, the NH group showed substitution errors dominantly regardless of the SNRs compared to the other groups. Both the HA and CI groups had substitution errors that declined, while no response errors appeared as the SNRs increased. The CI group was characterized by lower substitution and higher fail errors than did the HA group. Substitutions of initial and final phonemes in the HA and CI groups were limited by place of articulation errors. However, the HA group had...Continue Reading

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Citations

Apr 19, 2017·Journal of Audiology & Otology·Woojae HanIn-Ki Jin
Aug 5, 2018·The Journal of the Acoustical Society of America·Ignacio Moreno-Torres, Sonia Madrid-Cánovas

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Methods Mentioned

BETA
cochlear implant

Software Mentioned

SPSS

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