An Acoustic Study of the Emphatic Occlusive [t] in School-Going Children with Cleft Palate or Cleft Lip

• Autorzy: Baazi Khaled , Guerti Mhania

Identyfikatory

DOI

10.24425/aoa.2022.141645

• Języki publikacji: EN

Abstrakty

EN

The aim of this acoustic study is to analyse the phoneme [t] produced by school children surgically operated on for the cleft palate or cleft lip, in order to examine their vocal characteristics, to provide speech therapists with numerous concrete analyses of voice and speech, to effectively support them and to prevent some serious outcomes on their psychological and academic development. The motivation for this study was mainly stemming from the difficulties that Algerian schoolchildren with clefts encounter in the pronunciation of this phoneme. To carry out the study, several acoustic parameters were investigated in terms of the fundamental frequency F₀, the first three formants F₁, F₂, and F₃, the energy E₀, the Voice Onset Time (VOT), the durations [CV] and [V] of the subsequent vowel [a]. For the analysis, further important parameters in the field of pathological speech were deployed, namely the degree of disturbance of F₀ (jitter), the degree of disturbance of intensity (shimmer) and the HNR (Harmonics to Noise Ratio). Results revealed disturbance in the values of F₁, F₂, and F₃ and stability in the values of F₀. Another important reported aspect is the increase in the value of the VOT due to the difficulties in controlling the plosives’ successive closure and release.

Słowa kluczowe

EN

cleft palate; cleft lip and cleft palate; acoustic analysis; school children

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2022
• Tom: Vol. 47, No. 2
• Strony: 141--149
• Opis fizyczny: Bibliogr. 24 poz., fot., rys., tab., wykr.

Twórcy

autor

Baazi Khaled

• Signal and Communications Laboratory National Polytechnic School (ENP) 1El-Harrach Algiers, 16200 Algeria
• Scientific and Technical Research Centre for the Development of the Arabic Language (STRCDAL) BP 225 Rostomia Algiers, 16011 Algeria

autor

Guerti Mhania

• Signal and Communications Laboratory National Polytechnic School (ENP) 1El-Harrach Algiers, 16200 Algeria

Bibliografia

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