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The purpose of this study was to explore the relationship between acoustic indicators in speech and the presence of orofacial myofunctional disorder (OMD). This study analyzed the first and second

The purpose of this study was to explore the relationship between acoustic indicators in speech and the presence of orofacial myofunctional disorder (OMD). This study analyzed the first and second formant frequencies (F1 and F2) of the four corner vowels [/i/, /u/, /æ/ and /ɑ/] found in the spontaneous speech of thirty participants. It was predicted that speakers with orofacial myofunctional disorder would have a raised F1 and F2 because of habitual low and anterior tongue positioning. This study concluded no significant statistical differences in the formant frequencies.

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