CS&D 110 Chapter Notes - Chapter 8: Velopharyngeal Inadequacy, List Of Voice Disorders, Fundamental Frequency

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Voice reflects a lot about a person even their personality. Resonance: quality of voice that is produced from sound vibrations in the pharyngeal, oral, and nasal cavities. Velopharyngeal inadequacy (vpi): failure of velopharyngeal mechanism to separate oral and nasal cavities during speech production and swallowing. Monotone voice is result of not varying frequency. Vocal loudness: measured in decibels (db, as vocal intensity increases, the perceived loudness of the voice increase, normal conversational speech is about 60 db, alveolar pressure is major determinant of vocal intensity. Every time pressure doubles, there is 8-12 db increase. Resonance: normal resonance largely determined by velopharyngeal structures and adequacy of their function. Deviations in voice quality, pitch, loudness, and flexibility that may signify illness and/or interfere with communication. 3-6% of school-age children and 3-9% of adults have a voice disorder. Voice disorders in children are mostly temporary: linked to vocal misuse or abuse.

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