The effect of reduced vowel working space on speech intelligibility in Mandarin-speaking young adults with cerebral palsy

Huei Mei Liu, Feng Ming Tsao, Patricia K. Kuhl

研究成果: 雜誌貢獻期刊論文同行評審

108 引文 斯高帕斯(Scopus)

摘要

The purpose of this study was to examine the effect of reduced vowel working space on dysarthric talkers' speech intelligibility using both acoustic and perceptual approaches. In experiment 1, the acoustic-perceptual relationship between vowel working space area and speech intelligibility was examined in Mandarin-speaking young adults with cerebral palsy. Subjects read aloud 18 bisyllabic words containing the vowels /i/, /a/, and /u/ using their normal speaking rate. Each talker's words were identified by three normal listeners. The percentage of correct vowel and word identification were calculated as vowel intelligibility and word intelligibility, respectively. Results revealed that talkers with cerebral palsy exhibited smaller vowel working space areas compared to ten age-matched controls. The vowel working space area was significantly correlated with vowel intelligibility r = 0.632, p < 0.005) and with word intelligibility (r = 0.684, p < 0.005). Experiment 2 examined whether tokens of expanded vowel working spaces were perceived as better vowel exemplars and represented with greater perceptual spaces than tokens of reduced vowel working spaces. The results of the perceptual experiment support this prediction. The distorted vowels of talkers with cerebral palsy compose a smaller acoustic space that results in shrunken intervowel perceptual distances for listeners.

原文英語
頁(從 - 到)3879-3889
頁數11
期刊Journal of the Acoustical Society of America
117
發行號6
DOIs
出版狀態已發佈 - 2005 六月

ASJC Scopus subject areas

  • 藝術與人文(雜項)
  • 聲學與超音波

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