CSD-2259 Chapter Notes - Chapter 11.1: Vocal Folds, List Of Voice Disorders, Phonation
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Glottiscope: coupled a tongue retractor with a mirror to provide a glimpse of the laryngeal cavity. A laryngeal mirror is a small, round dental mirror that is placed at the back of the oral cavity to allow a clinician to look do(cid:449)(cid:374) o(cid:374) a(cid:374) i(cid:374)di(cid:448)idual"s (cid:448)o(cid:272)al folds. Frequency- the rate of vocal fold vibration, expressed as cycles as cycles per second, or hertz (hz) Pitch is the psychological or perceptual equivalent. When the vocal folds vibrate, they do so at several different frequencies. Fundamental frequency (f0) is the arithmetic mean of the rates of vibration for the vocal folds: average for kindergarten girls and boys is 250, adult woman ranges 180-220, adult men range from 120-140. The physical measure of sound pressure, reported in decibels (db) The perceptual correlate of intensity is loudness. Intensity is determined by how far the vocal folds separate laterally and how quickly they come back together in a vibratory circle.