Phonetics and Speech Sciences (말소리와 음성과학)

Korean Society of Speech Sciences (한국음성학회)
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The Lombard effect on the speech of children with intellectual disability

지적장애 아동의 롬바드 효과에 따른 말산출 특성

  • 이현주 (가야대학교 보건대학원 언어병리학전공) ;
  • 이지윤 (제주국제대학교 언어치료학과) ;
  • 김유경 (가야대학교)
  • Received : 2016.11.02
  • Accepted : 2016.12.16
  • Published : 2016.12.31
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Abstract

This study investigates the acoustic-phonetic features and speech intelligibility of Lombard speech in children with intellectual disability, by examining the effect of Lombard speech at 3 levels of non-noise, 55dB, and 65dB. Eight children with intellectual disability read sentences and played speaking games, and their speech were analyzed in terms of intensity, pitch, vowel space of /a/, /i/, and /u/, VAI(3), articulation rate and speech intelligibility. Results showed, first, that intensity and pitch increased as noise level increased; second, that VAI(3) increased as the noise level increased; third, that articulation rate decreased as noise intensity increased; finally, that speech intelligibility increased as noise intensity increased. The Lombard speech changed the VAI(3), vowel space, articulation rate, speech intelligibility of the children with intellectual disability as well. This study suggests that the Lombard speech will be clinically useful for the persons who have intellectual disability and difficulties in self-control.

Keywords

References

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