LING 3P97 Lecture Notes - Lecture 1: Vocal Folds, Musical Tone, Damping Ratio
15 Sep 2015
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Frequency: pure tone- a single frequency of sound, cycle of vibration: one complete wave length, anything that has a pattern is periodic, frequency (hz) is the # of cycles / second, period and frequency reciprocate, figure 2-2 pg. What impacts frequency: length, length (increase) = frequency (decrease, ie. Male has longer vocal folds, when they touch each other, frequency: mass (increase) = frequency (decrease, ie. Females tends to drop in frequency since mass increases (vibrates more decreases: mass slowly, stiffness , stiffness (increase) = frequency (increase, singing very high, your vocal folds stretch out which makes things to vibrate quickly, ie. Elastic band stretch it really far, vibrates very quickly or stretch it loosely then it won"t vibrate as quickly: stiffness vs compliance. Compliance how easily it moves back and forth. Therefore, stiffness means it is not compliant: density, density (increase) = frequency (decrease, molecules that are closer together, more dense.
