摘要
从声学角度出发应用计算机语音分析技术测试反映腭裂术后患者声道形态特征的元音共振峰。结果表明，腭裂术后语音不良组（Ａ组）除〔ａ〕外，其余５个单元音的第三共振峰频率（Ｆ３）均显著低于腭裂术后语音清晰度组（Ｂ组）（Ｐ＜０．０５）；声学元音图直观显示了（Ａ组）的声学感知空间较（Ｂ组）小。提示腭裂术后语音不良的原因可能系腭裂术后存在不同程度的腭咽闭合不全及腭裂患者长期形成的舌位后移，下颌开度不准和口唇肌运动不协调等代偿性不良发音习惯未得到完全矫正。文中指出，腭裂术后清晰可懂的语音是建立在腭咽闭合完全的基础上，逐渐矫正长期形成的代偿性不良发音习惯的结果。
The Chinese vowel formants which represent vocal character of patients with repaired cleft palate had been measured by computerized speech signal processing system. The results showed that the values of the third formant frequences(F 3) of vowels except a in poor articulation gruop(A group) were significantly lower than those in good articulation group(B group) (P<0.05).The vowelgraph demonstrated the decreased perceptual distances for A group compared with B group.These findings suggested that there were velopharyngeal incompetence(VPI),the backward movements of tongue, perverted mandibular movements and disharmonious lip movements in A group. It is concluded that good articulation of children with repaired cleft palate is gained in condition of velopharyngeal competence and bad compensational phonation habit being corrected.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
1996年第4期259-260,共2页
Journal of Practical Stomatology
