Quiz 4 - Acoustics of Vowels

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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


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