Acoustic analysis of correct and misarticulated semivowels.
Acoustic analysis of correct and misarticulated semivowels.
复制标题
正确和错误发音的半元音的声学分析。
DOI：
10.1044/jshr.3102.275
复制
发表时间：
1988
期刊：
影响因子：
--
通讯作者：
C. Chaney
中科院分区：
文献类型：
--
作者：
C. Chaney
四名儿童谁产生正确的（w，r，l，j），四名儿童与发展的w/r和w/l替代，和四个构音障碍儿童与w/r和w/l替代。他们制作了一组对比度最小的单词，单词的开头位置是（w，r，l，j），有四个元音，单词的开头位置是（w，r，l），有两种辅音群。儿童的话语进行频谱分析的三个共振峰频率和过渡率的第二共振峰。正确的半元音的儿童产生独特的共振峰频率模式的半元音，类似于以前在文献中报道的成人和儿童。发育和发音障碍的儿童产生的声学特征（j），是类似的（j）由控制组产生的，但无论是共振峰频率或过渡率（w，r，l）之间没有组区分。两组中的一些个体在某些语音背景下产生了半元音之间的共振峰频率和/或转换率差异。三名发展儿童和两名构音障碍儿童对目标（w）和替代（r）和（l）的（w）与控制（w）的声学模式不匹配。这些产物具有较高的第二共振峰，发生在对照（w）和（r，l）之间或在正确的（r，l）范围内。
Four children who produced correct (w,r,l,j), four children with developmental w/r and w/l substitutions, and four articulation impaired children with w/r and w/l substitutions were subjects. They produced sets of minimally contrasted words with (w,r,l,j) in word-initial position with four vowels and with (w,r,l) in two types of consonant clusters. Children's utterances were spectrographically analyzed for three formant frequencies and transition rate of the second formant. Children with correct semivowels produced distinctive formant frequency patterns for semivowels that were similar to those previously reported in the literature for adults and children. Developmental and articulation impaired children produced acoustic features for (j) that were similar to the (j) produced by the control group; but neither group differentiated among (w,r,l) by either formant frequencies or transition rate. Some individuals in both groups produced formant frequency and/or transition rate differences among semivowels in some phonetic contexts. The (w) produced for target (w) and in substitution for (r) and (l) by three developmental children and two articulation-impaired children did not match the acoustic pattern of control (w). These productions had higher second formants, occurring between control (w) and (r,l) or in the range of correct (r,l).