소음 하에서 건청 및 인공와우 착용 아동의 문장인지역치 연구
The Study of Sentence Recognition Threshold in Normal Hearing and Cochlear Implant Children in White Noise
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초록
The purpose of this study was to examine signal-to-noise ratios (SNRs) needed sentence recognition threshold (SeRT) in 10 children with cochlear implant (CI), compared to 10 normal hearing (NH) children. Eight lists, each containing 10 sentences, of the Korean Standard Sentence Lists for School-Age (KS-SL-SA) were used under white noise condition to each group (10 NH and 10 CI children). SNRs were controlled at -6 to +15 dB and -15 to +6 dB by 3-dB step for CI and NH group, respectively. As results, the SeRTs were presented at +6.64 dB for CI and -9.73 dB for NH group. The slope of sentence recognition score was showed 10.6/dB and 22.6/dB for CI and NH, respectively as a function of SNRs. Consequently, CI children need better SNR compare to normal hearing to understand speech in noise. The results might be applied to determine useful SNR for CI user's aural rehabilitation. Further studies will be continued in terms of speech recognition in SNR, while considering speech materials, hearing threshold level, ages, and various noise.
Abstract
The purpose of this study was to examine signal-to-noise ratios (SNRs) needed sentence recognition threshold (SeRT) in 10 children with cochlear implant (CI), compared to 10 normal hearing (NH) children. Eight lists, each containing 10 sentences, of the Korean Standard Sentence Lists for School-Age (KS-SL-SA) were used under white noise condition to each group (10 NH and 10 CI children). SNRs were controlled at -6 to +15 dB and -15 to +6 dB by 3-dB step for CI and NH group, respectively. As results, the SeRTs were presented at +6.64 dB for CI and -9.73 dB for NH group. The slope of sentence recognition score was showed 10.6/dB and 22.6/dB for CI and NH, respectively as a function of SNRs. Consequently, CI children need better SNR compare to normal hearing to understand speech in noise. The results might be applied to determine useful SNR for CI user's aural rehabilitation. Further studies will be continued in terms of speech recognition in SNR, while considering speech materials, hearing threshold level, ages, and various noise.
참고문헌 (17)
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