Rehabilitation Sciences 3061A/B Lecture 6: Lecture 6: CSD
12 May 2017
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Document Summary
3 important systems or mechanisms: the vocal mechanism. Tongue, lips, mandible, palate, teeth: the nervous system. Job # 1 life support will always seek first to maintain life. Job #2 breathing for speech: 1. quick, large inspiration, 2. slow, controlled, and sustained expiration, 3. speech overlaid on this slow, controlled, and sustained expiration. Air is driven from respiratory system through larynx to vibrate the vocal folds. Modifications that happen to sound as it passes through the pharyngeal, oral and nasal cavities. Dependent on size (width, length), shape, tissue density of structure and of movement of structures (tongue, lips, jaw) which consistently alter shape of cavity to enhance or dampen the sound wave. Dependent on movement of soft palate in opening and closing of nasal cavity. Interdental: pronounced with tongue between teeth: th both voiced and voiceless. Lingua-alveolar: pronounced with the tongue tip or blade against ridge behind upper front teeth.
