exam2008 - Midterm Exam Communication Studies 119 Short...

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Midterm Exam Communication Studies 119 January 31, 2008 Short answer questions. You do not need to write a treatise on each question! Answers should vary in length from a few sentences for the 5 point questions to a paragraph for the 15 point questions. 1. How do changes in chest cavity size cause air to flow in and out of the lungs? (5 points) 2. How do we use the respiratory system to control the rate of air flow from the lungs during speech? (10 points) 3. In source-filter theory, what is the source and what is the filter? How does each affect the sound of a voice? (10 points) 4. Describe the process that leads to vocal fold vibration once the folds are in position across the airway. Why do the folds start vibrating? What makes them open and close? (15 points) 5. How does vocal fold vibration produce sound? (15 points) 6. What does contraction of the cricothyroid muscle do? (5 points) 7. How do the stiffness and mass of the vocal folds affect the frequency of their vibration? (10 points) 8. How does changing the rate of vocal fold vibration affect the perceived pitch of the voice?
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