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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국청각언어재활학회 Audiology and Speech Research Audiology and Speech Research 제13권 제1호
발행연도
2017.1
수록면
88 - 94 (7page)

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Purpose: The aims of this study were to investigate the sentence recognition score (SRS), clarity of speech sounds, perception of changes in the background noise and differences in the overall preference according to the compression types in a multi-channel hearing aid. Methods: 19 subjects (21 ears) with moderate to severe sensorineural hearing loss (SNHL) participated in this study. The compression methods of hearing aids were adjusted to implement the base increase at low level (BILL), treble increase at low level (TILL), and Multichannel compression (MCC), and the compression ratio in these cases was 2 : 1. After varying the compression methods of the hearing aid according to the frequency band, the SRS, clarity of speech sounds, perception of changes in the background noise, and overall preference for the sound quality were investigated in a quiet, 6 dB and 0 dB signal-to-noise ratios (SNRs). Results: For SRS, scores of MCC were higher than those of either BILL or TILL in the case of a quiet and 6 dB SNR, and no difference in SRS was found between BILL and TILL. In the subjective evaluation, MCC and BILL were found to have higher scores than TILL, while there was no difference between BILL and MCC. Conclusion: This study confirmed that for Korean with SNHL, it was effective in terms of the SRS or clarity of speech sounds to implement compression for all frequencies. However, it is considered necessary to conduct further research upon the effective compression ratio and compression threshold according to the hearing threshold level for adequate electroacoustic adjustment of hearing aids for Korean with hearing impairment.

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