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Full-Text Articles in Speech and Hearing Science
Effect Of Occlusion, Directionality And Age On Horizontal Localization, Lynzee Nicole Alworth
Effect Of Occlusion, Directionality And Age On Horizontal Localization, Lynzee Nicole Alworth
Theses and Dissertations (ETD)
Localization acuity of a given listener is dependent upon the ability discriminate between interaural time and level disparities. Interaural time differences are encoded by low frequency information whereas interaural level differences are encoded by high frequency information. Much research has examined effects of hearing aid microphone technologies and occlusion separately and prior studies have not evaluated age as a factor in localization acuity. Open-fit hearing instruments provide new earmold technologies and varying microphone capabilities; however, these instruments have yet to be evaluated with regard to horizontal localization acuity.
Thus, the purpose of this study is to examine the effects of …
Temporal And Aerodynamic Aspects Of Velopharyngeal Coarticulation: Effects Of Age, Gender And Vowel Height, Fadwa Khwaileh
Temporal And Aerodynamic Aspects Of Velopharyngeal Coarticulation: Effects Of Age, Gender And Vowel Height, Fadwa Khwaileh
Theses and Dissertations (ETD)
Previous studies on the normal patterns of velopharyngeal coarticulation did not provide a multidimensional description of the phenomenon. The primary objective of this study was to determine the effects of age, gender and vowel height on the temporal and aerodynamic aspects of nasal airflow segments related to velar coarticulation in the normal speech of children and adults. A secondary objective was to determine the within speaker variability of the segments.
Speakers consisted of 20 children between the ages of 5 and 7 years, 20 children between 9 and 11 years and 20 adult speakers 18 years or older. Nasal and …