5. Vowels Flashcards

(44 cards)

1
Q

Which of the following best describes the number of phonological vowel choices in Standard Southern British English?

A

About 20

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which pair of words demonstrates a phonological merger in some English varieties?
A. BOW – BED
B. COT – CAUGHT
C. BEAD – BID
D. BOD – BOOED

A

B. COT – CAUGHT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

In some English varieties, which of the following pairs are not phonologically distinct?
A. STRUT – FOOT
B. DRESS – TRAP
C. GOOSE – GOAT
D. KIT – FLEECE

A

A. STRUT – FOOT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which dimensions are used to describe vowel articulation in the IPA vowel chart?

A

Height, backness, rounding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The term “high” in vowel articulation corresponds to which IPA label?

A

Close

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which of the following vowels is rounded and back in the IPA vowel chart?
A. [i]
B. [u]
C. [æ]
D. [ɛ]

A

B. [u]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the primary acoustic source for vowels in speech?

A

Periodic vibration at the larynx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

In the source-filter model, what is the role of the vocal tract?

A

It filters the glottal source to shape vowel quality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which term refers to the resonant peaks in the vocal tract’s frequency response?

A

Formants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which formants are typically most important for characterizing vowel quality?

A

F1 and F2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the main reason for using formant normalization?

A

To reduce variation caused by physical vocal tract differences

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the z-score formula used for formant normalization?

A

z=x−MSDz = \frac{x - M}{SD}z=SDx−M​

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which of the following is true after formant normalization?
A. Male and female formant ranges remain completely separate
B. Normalized vowel plots still reflect raw physical size differences
C. Speakers’ vowel spaces become more directly comparable
D. Normalized F1 is unrelated to perceived vowel height

A

C. Speakers’ vowel spaces become more directly comparable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

A diphthong is best described as:

A

A transition between two vowel qualities

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q
  1. Which of the following are examples of diphthongs in Standard Southern British English?
    A. [i:], [u:]
    B. [eɪ], [aɪ], [ɔɪ]
    C. [æ], [ʌ], [ɑ]
    D. [ɪ], [ʊ], [e]
A

B. [eɪ], [aɪ], [ɔɪ]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

On a spectrogram, what characteristic is used to identify a diphthong?

A

Formant transition (sloping formants)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

When comparing formant frequencies across speakers, which variable must be controlled to avoid misleading conclusions?

A

Speaker’s height and vocal tract length

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

In a normalized F1-F2 vowel space, which of the following would indicate a front and close vowel?
A. High F1, low F2
B. Low F1, high F2
C. High F1, high F2
D. Low F1, low F2

A

B. Low F1, high F2

19
Q

In vowel synthesis, using the speaker’s own F0 and formant values makes the synthesized vowel:
A. Sound like a robot
B. Unrecognizable
C. More similar to the speaker’s natural vowel
D. Louder and higher pitched

A

C. More similar to the speaker’s natural vowel

20
Q

How many vowel phoneme choices are there in Standard Southern British English?

21
Q

What is the phonological difference between “COT” and “CAUGHT” in some varieties of English?

A

In some varieties they are merged (sound the same), in others they are distinct.

22
Q

Give an example of a phonological merger in some varieties of English.

A

STRUT = FOOT (in some dialects)

23
Q

What is the sound source for vowel production?

A

Periodic glottal vibration (phonation)

24
Q

What is the function of the vocal tract in the source-filter model?

A

Acts as a filter that shapes the glottal source into specific vowel sounds

25
What are formants?
Resonant frequency peaks in the vocal tract’s frequency response
26
What model explains the acoustic structure of vowels?
The source-filter model
27
What relationship exists among the IPA vowel chart, F1-F2 vowel space, and the oral cavity?
Rough spatial correspondence based on tongue position
28
What does psychoacoustics study?
The subjective perception of sound. ## It explores how we interpret sound, beyond its physical properties.
29
What does the phrase "Perception of objective reality is subjective" mean in the context of sound?
What we hear depends on how our auditory system processes sound. ## Our brains interpret the same sound wave differently depending on context and physiology.
30
What is sound in physical terms?
The propagation of air pressure fluctuations. ## These fluctuations travel in waves and are interpreted by our auditory system.
31
What are compression and rarefaction in a sound wave?
Compression is high-pressure zones; rarefaction is low-pressure zones. ## These pressure changes form the basis of sound waves.
32
How do air pressure fluctuations reach our ears?
They propagate as longitudinal waves through the air. ## This movement stimulates our auditory system.
33
What are the three basic dimensions of speech perception?
Loudness, pitch, and timbre. ## Each relates to a different physical characteristic of sound.
34
What is timbre in sound perception?
The quality or color of sound. ## Timbre allows us to distinguish different voices or instruments even if pitch and loudness are the same.
35
What does Weber’s Law state about perception?
The just noticeable difference (JND) is a constant fraction of the stimulus size. ## For loudness, the JND is about 12%.
36
How does the decibel (dB) scale relate to sound pressure?
It is a logarithmic scale comparing a test pressure to a reference pressure. ## This scale makes exponential changes appear linear to human perception.
37
What is the JND in decibels for loudness?
Approximately 1 dB. ## A 1 dB change is the smallest difference in loudness humans can typically detect.
38
What is the dB formula used for sound pressure?
dB = 20 × log₁₀(test/reference). ## Common reference is 20 µPa, the threshold of human hearing.
39
What is the range of human hearing in Pascals?
From 20 µPa (just audible) to 200 Pa (painful). ## This vast range highlights the sensitivity of human hearing.
40
What is the JND for pitch?
Approximately 0.5% of the frequency. ## This means a change of 2.2 Hz at 440 Hz (concert A).
41
How are musical pitch intervals calculated?
One octave = 2× frequency; one semitone = 1.06× frequency. ## These ratios define standard musical scales.
42
What happens to pitch perception at different frequency levels?
Changes at low frequencies cause greater perceptual shifts than at high frequencies. ## This non-linearity reflects our auditory system’s characteristics.
43
What does a sound spectrum show?
The distribution of energy across frequency. ## It's a snapshot of the frequencies present in a sound.
44
What are the three dimensions represented in a spectrogram?
Time (x-axis), frequency (y-axis), and amplitude (grayscale). ## Spectrograms are critical tools in speech and sound analysis.