The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association · 2000
The effect of vowels on nasalance scores.
Сравнительное исследованиеСтатьяНазвание и аннотация: Перевод пока не подготовлен
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Lewis K E, Watterson T, Quint T
Аннотация
OBJECTIVE: Nasalance scores were compared for nine different speech stimuli with vowel content controlled.
DESIGN: The nine speech stimuli included four vowels spoken in isolation and five sentences. The four vowels were /i/, /u/, /ae/, and /a/. Four of the five sentences were loaded with High Front, High Back, Low Front, or Low Back vowels, and the fifth sentence contained a mixture of vowel types.
SETTING: Academic and clinical craniofacial center.
SUBJECTS: The subjects were 19 children with velopharyngeal dysfunction (VPD) and 19 children without history of communication disorder.
MAIN OUTCOME MEASURES: The main outcome measures were the nasalance scores associated with the nine different speech stimuli for two groups of subjects.
RESULTS: For the VPD group, analysis of variance procedures revealed that nasalance scores for high-vowel sentences and the mixed-vowel sentence were significantly higher than the nasalance scores for the two low-vowel sentences. This pattern was the same for the non-VPD group except for the High Back/Low Back contrast, which was not significant. In both groups, nasalance scores for sustained vowels were significantly higher for the High Front vowel /i/ than for any other vowel, and nasalance was significantly higher for the High Back vowel /u/ than for either of the Low vowels /ae/ or /a/. There was no significant difference between Low vowels.
CONCLUSION: Nasalance scores may be affected by the vowel content of the speech stimulus. This should be taken into consideration on a clinical basis and for research purposes.
DESIGN: The nine speech stimuli included four vowels spoken in isolation and five sentences. The four vowels were /i/, /u/, /ae/, and /a/. Four of the five sentences were loaded with High Front, High Back, Low Front, or Low Back vowels, and the fifth sentence contained a mixture of vowel types.
SETTING: Academic and clinical craniofacial center.
SUBJECTS: The subjects were 19 children with velopharyngeal dysfunction (VPD) and 19 children without history of communication disorder.
MAIN OUTCOME MEASURES: The main outcome measures were the nasalance scores associated with the nine different speech stimuli for two groups of subjects.
RESULTS: For the VPD group, analysis of variance procedures revealed that nasalance scores for high-vowel sentences and the mixed-vowel sentence were significantly higher than the nasalance scores for the two low-vowel sentences. This pattern was the same for the non-VPD group except for the High Back/Low Back contrast, which was not significant. In both groups, nasalance scores for sustained vowels were significantly higher for the High Front vowel /i/ than for any other vowel, and nasalance was significantly higher for the High Back vowel /u/ than for either of the Low vowels /ae/ or /a/. There was no significant difference between Low vowels.
CONCLUSION: Nasalance scores may be affected by the vowel content of the speech stimulus. This should be taken into consideration on a clinical basis and for research purposes.