Quiz 4 - Acoustics of Vowels
When producing the neutral vowel /ç/, the vocal tract is fairly uniform along its length. The length is, on average, approximately _______ in adult males?
17.5 cm
_____ is associated with the length of the pharyngeal cavity
F1
_____ is associated with the length of the oral cavity
F2
Which of the following harmonics show the characteristics of vocal tract resonance?
R1 = 500H, R = 1500 Hz, R3 = 2500 Hz
When the air inside a partially or completely enclosed container is set into vibration, we say that the container is a/an:
acoustic resonator
(T/F): Lip rounding increases the formants of F3
false
Sarah changed the sound from [i] to [a] while maintaining the pitch. Did she change source or filter function? What is the main cause of the effect?
filter change caused by the change of the vocal tract shape
the characteristics resonances are called
formants
In general, the formant pattern for ______ vowels is this: F1 and F2 are further apart, while F2 and F3 are closer together
front
The source filter theory states that the _____ signal is filtered through the _____ _____
glottal; vocal tract
F1 can be manipulated with tongue _____
height
The radiation characteristics at the lips favor which components of the sound wave?
high-frequency
As the first and second formant frequencies move closer together, the perception of back vowel quality ________
increases
As the vowel becomes lower or more open, F1:
increases
For front vowels, the first formant ________ as the vowel becomes more open
increases
The movement of the articulators will create different-sized resonating spaces. The larger of the resonating spaces will produce the:
lower formant frequencies
For specification of a given vowel, only which formant(s) is/are required?
the first three formants
The decrease in harmonic amplitude with increasing frequency of the harmonic is referred to as what characteristics of the spectrum?
the roll-off
Open syllables end in a/an:
vowel