有腭裂和无腭裂的波斯语儿童鼻音化的时间特征

Temporal characteristics of nasalization in Persian speaker children with and without cleft palate.

作者信息

Baghban Kowsar, Torabinezhad Farhad, Moradi Negin, Asadollahpour Faezeh, Ahmadi Nassim, Mardani Najmeh

机构信息

Department of Speech Therapy, School of Rehabilitation, Hamadan University of Medical Science, Hamadan, Iran; Department of Speech Therapy, School of Rehabilitation, Tehran University of Medical Science, Tehran, Iran.

Department of Speech Therapy, School of Rehabilitation, Iran University of Medical Science, Tehran, Iran.

出版信息

Int J Pediatr Otorhinolaryngol. 2015 Apr;79(4):546-52. doi: 10.1016/j.ijporl.2015.01.026. Epub 2015 Jan 30.

DOI:10.1016/j.ijporl.2015.01.026

PMID:25700957

Abstract

OBJECTIVES

The purpose of this study was to measure and compare temporal patterns of nasalization in Persian children with and without cleft palate in three vowel contexts.

METHODS

A Sample of 14 children with repaired cleft palates with or without cleft lip with moderate to severe hyper nasality and 14 children without cleft palate was chosen as subjects. The subjects were chosen from the ages of 4 to 12 years. The nasal onset interval, nasal offset interval and total nasalization duration were obtained from acoustic waveforms and spectrograms in three vowel contexts using Praat Software. For eliminating the effect of different speed of speech in the cleft palate group and control group, the ratio of nasalization duration was calculated.

RESULTS

Total nasalization duration are demonstrated by acoustic signals which shows the total significant different temporal patterns in children with cleft palate and without cleft palate and across the vowel contexts (P<0.000).

CONCLUSIONS

Longer nasalization durations in children with cleft palate in comparison to children without cleft palate show the delayed or deviant temporal patterns in children with cleft palate. The duration of nasalization reflecting temporal patterns of the oral-nasal acoustic impedance in children with cleft palate may have an influence on the perception of hyper nasality.

摘要

目的

本研究旨在测量并比较有腭裂和无腭裂的波斯儿童在三种元音语境下的鼻音化时间模式。

方法

选取14名腭裂已修复的儿童作为研究对象，这些儿童伴有或不伴有唇裂，存在中度至重度高鼻音；另选14名无腭裂儿童作为对照。研究对象年龄在4至12岁之间。使用Praat软件，从三种元音语境下的声学波形和频谱图中获取鼻音起始间隔、鼻音结束间隔和总鼻音化持续时间。为消除腭裂组和对照组中不同语速的影响，计算鼻音化持续时间的比率。