![]() Īcoustic analysis can determine the laryngeal and supra-laryngeal articulatory behavior of persons who stutter. Weaker laryngeal neuromuscular control and disturbances in respiratory and laryngeal control may also lead to voice problems. Abnormal functioning of the larynx may include excessive muscular tension and variable subglottal pressure, which could be caused by muscle incoordination of the respiratory tract. During stuttering there is abnormal functioning of the whole speech system including the larynx. Acoustic analysis can be used as simple, quick, and cheap tool for assessment of stuttering in children and might be a valuable addition to the diagnostic set for assessment of stuttering severity.Įvidence for differences in speech motor control in the stuttering population has been documented in behavioral and neurological paradigms. Some of these acoustic parameters were significantly correlated with stuttering severity. The present study revealed significant differences in the acoustic parameters of voice and speech between Arabic-speaking stuttering children and normal children. F0 was significantly higher in females than in males, both in normal and stuttering children. Both jitter and shimmer of prolonged /a/ vowel demonstrated significant positive moderate correlation with stuttering severity as assessed by SSI3. This may reflect the subtle differences in laryngeal functioning or in the complex interaction among the laryngeal, respiratory, and the vocal tract systems in stuttering children. The stuttering children showed significantly higher values of jitter and shimmer in prolonged /a/ vowel sample, as compared to the normal group. A sample of 80 Arabic-speaking Egyptian children (including 40 typically developing children and 40 stuttering children) in the age range 5–8 years were subjected to acoustic analysis of voice and speech using the Praat software. The aim of this study was to determine acoustic characteristics of voice and speech in Arabic-speaking stuttering children in comparison to normal children and correlate these characteristics with stuttering severity. This study showed that stuttering does not influence the vowel duration.Using different methodologies, several researchers have reported certain acoustical and physiological differences between fluent utterances of stutterers and normally fluent speakers. However these values were higher in stutterers than nonstutterers. Independent t test showed that stuttering (P=0.21) and age (P=0.061) did not have significant effect on vowel duration. ![]() Afterward, its summary and fluent speech from three contexts were selected and recorded by praat software and duration of vowels was computed via spectrogram. The present study was descriptive and analytic and 22 stutterers and 22 nonstutterers participated and were asked to read a text that contains three contexts cv, cvc, cvcc and 6 vowels. The aim of this study was to study and compare the vowel duration in stutterers and nonstutterers. Vowel duration is a feature that demonstrates between nature of phonation differences in stutterers and nonstutterers. One of the temporal variable is vowel duration. Some of researchers define stuttering as a disorder in timing feature between acoustic elements and interruption in successful and simultaneous programming of speech muscles movements for a word production. ![]()
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