학령기 난청아동의 교실소음 속 어음 및 환경음 인지에 관한 연구

서지정보

· 발행기관 : 한국청각언어재활학회
· 수록지 정보 : 청능재활 / 8권 / 1호
· 저자명 : 김연주, 이재희

목차

INTRODUCTION
METHODS
RESULTS
DISCUSSIONS
CONCLUSIONS
REFERENCES

초록

일상생활 속에서 현대인은 자동차의 경적음, 컴퓨터의
팬 돌아가는 소리, 공사장 소음 등 여러 가지 크고 작은 소
음을 경험하게 되는데, 실생활 속 소음은 방음실에서 녹음
된 소음에 비해 주파수, 시간적 정보 면에서 보다 복잡하고
강도와 스펙트럼 상 다변화하는 양상을 보인다(Crandell & Bess, 1986; Rhebergen et al., 2008). 아동의 경우 성인
보다 소음 속에서 말소리를 듣고 이해하는 것이 어렵고
(Elliott et al., 1979; Fallon et al., 2000; Nittrouer &
Boothroyd, 1990; Picard & Bradley, 2001), 특히 건청
아동보다 난청아동이 소음에 의한 영향을 더욱 많이 받게
되므로(Crandell & Smaldino, 2000) 실생활 속 난청아동
의 소음하 인지능력을 알기 위해서는 조용한 상황이 아닌
아동들이 주로 접하게 되는 소음환경에서 인지능력을 측정
하는 것이 중요하다.

영어초록

This study aimed to measure accuracy of speech (monosyllables and sentences) and environmental sound recognition in the children
with hearing aids (HA, N = 17) or cochlear implants (CI, N = 22) when listening in the classroom noise. Nine normal-hearing children
participated as a control group. The classroom noise was recorded either just right before the class or during the break time. All the
target sounds were presented at 65 dB SPL, and 5 dB signal-to-noise ratio was used between the target and noise sounds. Additionally,
the usage of sign launage, CHAPPS (Children’s Auditory Processing Performance Scale), forward/backward digit span, KISE-KIT
(Korea Institute for Special Education-Korea Intelligence Test for children), REVT (Receptive and Expressive Vocabulary Test)
results were obtained for the purpose of correlational analysis. Three main findings were observed as follows. First, the type of noise
significantly affected recognition accuracy of both HA and CI groups. Closed-set environmental sounds were recognized more
accurately than sentence or words for both groups. Overall, children who better recognized the environmental sounds were also
superior to recognize speech in noise. Second, children with more usage of sign language as well as worse CHAPPS and digit span
scores had lower speech recognition performance in noise, regardless the type of stimulus. Third, the environmental sounds having
more repetition pattern and longer duration were more easily recognized for both groups. The analysis of word recognition errors
showed that, regardless of group and noise type, the common error types were no response, response as different words, and
consonant substitution.

참고자료

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