Journal of voice : official journal of the Voice Foundation · 2025
Evaluation of Acoustic and Aerodynamic Voice Characteristics of Children With Childhood Apraxia of Speech.
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Arslan Büşra, Ünsal Selim
Аннотация
OBJECTIVES: Childhood apraxia of speech (CAS) is a neurodevelopmental motor speech disorder that affects the planning and programming of speech movements, occurring in the absence of abnormal reflexes or muscle tone. The study aims to evaluate children with suspected childhood apraxia of speech (sCAS) using objective voice assessment methods (aerodynamic and acoustic voice analysis).
METHODS: Eight boys with sCAS (5.0-6.10; mean age 5.5 ± 0.52) and 8 typically developing boys without any problems (4.0-7.11; mean age 5.9 ± 1.14) participated in the study. Inconsistency, articulation, receptive language, expressive language, oral motor, perceptual, observational, acoustic, and aerodynamic assessments are evaluated for all participants. While the fundamental frequency, vocal jitter, vocal shimmer, and noise-to-harmonic ratios (NHRs) were examined in acoustic measurements, the maximum phonation time and s/z ratio were evaluated in aerodynamic measurements. The results were compared between the two groups.
RESULTS: According to the findings, there is no statistically significant difference in the fundamental frequency comparison of the sCAS group and the typically developing group (P > 0.05). However, it was found that there was a statistically significant difference between the groups in vocal jitter, vocal shimmer, and NHRs (P ≤ 0.05).
CONCLUSION: It is quite difficult to diagnose the apraxia of speech in childhood. According to the results of our study, distortions in acoustic voice analyses may be a good indicator to strengthen the diagnosis of CAS. However, this is not the case for aerodynamic data.
METHODS: Eight boys with sCAS (5.0-6.10; mean age 5.5 ± 0.52) and 8 typically developing boys without any problems (4.0-7.11; mean age 5.9 ± 1.14) participated in the study. Inconsistency, articulation, receptive language, expressive language, oral motor, perceptual, observational, acoustic, and aerodynamic assessments are evaluated for all participants. While the fundamental frequency, vocal jitter, vocal shimmer, and noise-to-harmonic ratios (NHRs) were examined in acoustic measurements, the maximum phonation time and s/z ratio were evaluated in aerodynamic measurements. The results were compared between the two groups.
RESULTS: According to the findings, there is no statistically significant difference in the fundamental frequency comparison of the sCAS group and the typically developing group (P > 0.05). However, it was found that there was a statistically significant difference between the groups in vocal jitter, vocal shimmer, and NHRs (P ≤ 0.05).
CONCLUSION: It is quite difficult to diagnose the apraxia of speech in childhood. According to the results of our study, distortions in acoustic voice analyses may be a good indicator to strengthen the diagnosis of CAS. However, this is not the case for aerodynamic data.