Questions from Quiz 7 Flashcards
Consider a vocal tract modeled as a single tube that is open at one end and closed at the other. Mary found that the second highest resonance frequency of the tube is 2100 Hz. What should be the first resonance frequency of the vocal tract?
a) 700 Hz
b) 1050 Hz
c) 1400 Hz
d) 1750 Hz
a) 700 Hz
Imagine you are analyzing the resonant frequencies of a vocal tract using a two-tube model. The vocal tract is divided into a back cavity that is 8 cm long and a front cavity that is 4 cm long. The two tubes are each modeled as being closed at one end (toward the glottis) and open at the other (toward the lips).
Given this configuration, which of the following is likely true regarding the first resonant frequency (F1) produced by this two-tube model?
a) F1 will be primarily determined by the front cavity.
b) F1 will be primarily determined by the back cavity.
c) F1 will result from the combined resonances of both tubes at equal frequencies.
d) F1 will be unrelated to the lengths of either tube in this model.
b) F1 will be primarily determined by the back cavity.
In a two-tube model of the vocal tract, which of the following are true? (Two correct answers.)
a) Each tube is modeled as being closed at one end and open at the other.
b) The ordering of resonant frequencies depends on the lengths of both the front and back cavities.
c) The first resonant frequency (F1) is always determined by the front cavity.
d) The model is only suitable for vowels produced without any constriction in the vocal tract
a) Each tube is modeled as being closed at one end and open at the other.
b) The ordering of resonant frequencies depends on the lengths of both the front and back cavities.
Which of the following statements about the single-tube model of vowel production are true? (Two correct answers.)
a) It is based on the assumption of a uniform tube open at one end and closed at the other.
b) It works well for vowels which no major constrictions in the vocal tract.
c) It can accurately model vowels having narrow constrictions in the vocal tract.
d) It can model most vowels, regardless of vocal tract shape.
a) It is based on the assumption of a uniform tube open at one end and closed at the other.
b) It works well for vowels which no major constrictions in the vocal tract.
In perturbation theory, what happens to the frequency of a formant when a constriction is made near an antinode?
a) The frequency decreases.
b) The frequency remains unchanged.
c) The frequency increases.
d) The frequency doubles.
a) The frequency decreases.
According to perturbation theory, which formant is likely to be decreased the most by a constriction at the velum region?
a) F1
b) F2
c) F3
d) F4
d) F4
