Analysis of fundamental frequency, jitter, shimmer and vocal intensity in children with phonological disorders
Analysis of fundamental frequency, jitter, shimmer and vocal intensity in children with phonological disorders
复制标题
DOI：
10.1590/s0034-72992005000500007
复制
发表时间：
2005-10-01
期刊：
影响因子：
--
通讯作者：
Amaro, Luciana
中科院分区：
文献类型：
--
作者：
Wertzner, Haydée F.;Schreiber, Solange;Amaro, Luciana
未标注：语音障碍是一种不确定原因的主要表现，使言语变得难以理解的障碍。由于语音障碍会干扰语音的产生，因此对语音参数的分析在语音障碍的诊断过程中变得非常重要。目的：本研究的目的是验证语音障碍儿童与强度和基频（F0）及其干扰指标（抖动和闪烁）相关的语音特征。材料与方法：共有40名儿童，其中20名有语音障碍，20名无言语和语言障碍。采用ABFW婴儿语言测试和自发言语进行语音检查。用计算机语音实验室记录并进行声学分析的元音/a/，/e/，/i/，通过声乐参数：基频，强度，jitter和shimmer.Results：F0-元音/e/是较小的，平均而言，在语音障碍组，它是126 Hz的控制组。对于闪烁和抖动，没有证据表明语音障碍组的平均值与对照组的平均值不同（分别为p= 0.191，p= 0.865）。至于强度，有证据表明，语音障碍组和对照组的平均值没有差异（p= 0.002）。结论：语音障碍组的元音/e/的频率较小。两组之间元音/a/、/e/和/i/的强度均值存在差异，语音障碍组较小。两组之间的抖动和闪烁平均值无差异。
UNLABELLED: Phonological Disorder is a disturbance of primary manifestation of undefined causes that makes speech become unintelligible. The analysis of vocal parameters becomes important in the process of diagnosis of this disorder, since voice disorders could interfere in the production of speech sounds.AIM: The objective of this study was to verify vocal characteristics related to the intensity and fundamental frequency--F0--and their disturbance indexes--jitter and shimmer--in children with phonological disorders.STUDY DESIGN: Clinical prospective with transversal cohort.MATERIAL AND METHOD: There were 40 children, 20 of them with phonological disorders and 20 with no speech and language disturbances. Phonological exams with the ABFW infantile language test and spontaneous speech were applied. The Computer Speech Lab was used to record and perform acoustic analyses of the vowels /a/, /e/, /i/, through the vocal parameters: fundamental frequency, intensity, jitter and shimmer.RESULTS: F0--vowel /e/ was smaller, on average, in the Phonological Disorder Group and it was 126 Hz in the Control Group. To shimmer and jitter there was no evidence that the means of the Phonological Disorder Group were different from the ones of the Control Group (p= 0.191, p= 0.865, respectively). As for intensity, there was evidence that the average did not differ in the Phonological Disorder Group and the Control Group (p= 0.002).CONCLUSION: The frequency of the vowel /e/ was smaller in the Phonological Disorder Group. There was difference between the two groups regarding the means of intensity of vowels /a/, /e/ and /i/, smaller in the Phonological Disorder Group. No differences between the groups were found regarding the averages of jitter and shimmer.