1. In the 11 mode, a half-wavelength pattern of vibration exists in both the
horizontal and the vertical dimension.
True
False
2. In sustained oscillation, the restoring force accelerates the body away
from the resting position.
True
False
3. Vibration of a simple harmonic oscillator is sinusoidal.
True
False
4. The Bernoulli effect explains the mechanism of sustained oscillation
of the vocal folds, especaially when no collision occurs.
True
False
5. The number of degrees of freedom of a vibrating system equals the number
of normal modes.
True
False
6. The one-mass model of the vocal folds can self-sustain oscillation only
in the absence of a vocal tract.
True
False
7. The Bernoulli principle predicts that if particle velocity within the
glottis becomes very large, pressure against glottal walls can become negative.
True
False
8. Low-viscosity materials in the lamina propria tend to promote the "ease" of
self-oscillation.
True
False
9. "Phonation threshold pressure" refers to the maximum pressure at which
phonation can be sustained.
True
False
10. The hierarchy of speech training proposed by Ling can be described
as follows: "Breathing first, then phonation, then articulation."
True
False
~ National Center for Voice and Speech, www.ncvs.org
