CH6 Airstream mechanics Flashcards

1
Q

Pulmonic egressive airstream mechanism

A

When lung air is pushed out of the lungs

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2
Q

Plosives

A

Stops with an egressive (outward) pulmonic airstream

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3
Q

Egressive glottalic airstream mechanism for ejectives

A
  1. Back of tongue forms a velar closure. The glottis is shut, creating a pocket of air that is disconnected from the lung.
  2. Closed glottis is raised
  3. Body of air in pharynx is compressed.
  4. Back of tongue is lowered, releasing compressed pharynx air.
  5. Glottal closure is released.
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4
Q

Ejective Notation

A

Transcribed with a diacritic : apostrophe [ʼ] indicates that the preceding segment is ejective
E.g. Georgian [mt͡s’vrtneli]

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5
Q

What segments can be ejectives ?

A

Obstruents (fricatives and affricates are possible, but rare)

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6
Q

Hausa Ejectives

A

Hausa : spoken in West Africa
Ejectives are phonemically different from plosives (e.g. kʷaːrà vs kʷʼaːrà)

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7
Q

Lakhota Ejectives

A

Lakhota
* Siouan
* spoken in North and South Dakota
E.g. /kah/ vs /kʼu/

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8
Q

Cue for ejective detection

A

First ejective consonant burst
* Higher amplitude then for plosives
* Greater lag before onset of following segment
2nd stop release burst
* Release of the vocal folds
* Much lower in amplitude

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9
Q

When do people produce ejectives in English ?

A

Ejectives are articulatorily equivalent to a glottal stop followed by an obstruent, where the release of the obstruent happens before the release of the glottal stop
* [ʔk] ≈ [k’]
- In free variation with plosives at the end of words in UK English

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10
Q

Distribution of ejectives

A

More common in Africa and North-American West

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11
Q

True or false : speakers of English can produce ejectives but they do not interpret them as phonemically contrastive

A

True

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12
Q

Implosives

A

Stops made with an ingressive glottalic airstream mechanism

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13
Q

Ingressive glottalic airstream

A
  1. Closure of the lips
  2. Downward movement of vibrating glottis. Air from the lungs continues to flow through the glottis.
  3. Little change in pressure of the air in the oral tract
  4. Lips come apart
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14
Q

Implosive notation

A

Voiced plosives with a right hook on the top
* Plosive [b] vs implosive [ɓ]
* Plosive [d] vs implosive [ɗ]
* Plosive [g] vs implosive [ɠ]

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15
Q

What segments can be implosives ?

A

Obstruents (typically voiced)

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16
Q

Sindhi Implosives

A
  • Sindhi
  • Indo-Aryan
  • Pakistan
  • 30 million people
    Implosives contrast with plosives
    E.g. [banu] ‘forest’ vs [ɓani] field
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17
Q

Cue to detecting implosives

A

Pre-voicing
* Increases in amplitude over time for implosives
* Slightly decreases for regular voiced plosives

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17
Q

Implosive allophone distribution in English

A

When putting emphasis on bilabial stops, e.g. in ‘billions’

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18
Q

Distribution of Implosives

A

Phonemic implosives in 76/567 languages
Voiced plosives in some languages are (slightly) implosive
* Thai, Vietnamese, Swahili

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19
Q

Velaric ingressive airstream mechanism in a dental click

A
  1. Back of tongue raised to form velar closure. Tongue tip up to form front closure.
  2. While both the anterior and the velar closure are maintained, the body of the tongue moves down, decreasing the pressure of the air in the front part of the mouth
  3. Tongue tip lowered so that air rushes into the mouth
  4. Velar closure released
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20
Q

Clicks are stops made with an _____ingressive/egressive velaric airstream mechanism

A

Ingressive

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21
Q

Click Notation in the IPA

A

Transcribed with a separate symbol (orthography)
Dental click /ǀ/ (c)
Alveolar /!/ (q)
Labial /ʘ/ (pc)
Lateral /ǁ/ (x)
Palatal /ǂ/

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22
Q

Distribution of clicks

A

9/567 languages
- used phonemically only in Sub-Saharan Africa (e.g. Zulu)

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23
Q

Paralinguistic clicks

A

Convey emotional state, imitate animal
English :
[ʘʷ] signals affection
[ǀ] signals disgust
(These do not count as click consonants because not phonemes)

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24
Q

Pulmonic Ingressive Airflow

A

Physically possible but not attested phonemically in any language
Northern Swedish ‘yes’ is a pulmonic ingressive [hʷ]

25
Q

Arytenoid cartilages

A

Adjust vocal cords position

26
Q

2 ways to move vocal cords

A
  1. Bought closer together and moved apart
  2. Tightened and loosened
    * Determines vibration rate
27
Q

Determines how much air passes through the glottis

A

Distance between vocal cords, changes by pushing together or moving apart

28
Q

Determines vibration rate

A

Whether the vocal cords are tightened and loosened

29
Q

Modal voiced

A

Regular vocal fold vibration (for regular isolated English vowel)

30
Q

Falsetto voiced

A

High vocal fold tension; only part of the vocal folds are vibrating against each other

31
Q

Creaky voiced

A

Lower tension; the vocal folds vibrate slowly and aperiodically

32
Q

Breathy voiced

A

Regular vocal fold vibration but with some airflow escaping

33
Q

Voiceless phonation type and vocal fold Position

A

Open, slack

34
Q

Modal (voiced) phonation type and vocal fold Position

A

Moderate opening and strech

35
Q

Creaky/larangalyzed phonation type and vocal fold Position

A

Closed, slack

36
Q

Breathy/Murmor

A

Stretched, open

37
Q

Falsetto

A

moderate opening, very stretched

38
Q

Cue to creaky voice detection in spectrogram

A

Widely, irregularly spaced glottal pulses

39
Q

Creaky voice in the IPA

A

Diacritic [ ̰ ] underneath (typically vowels)
- E.g. modal [a] vs creaky [a̰]

40
Q

Breathy voice in the IPA

A

Diacritic [ ̤ ] underneath
E.g. modal [a] vs breathy [a̤]
Consonants :
[ ʱ] indicates that the preceding consonant is breathy

41
Q

Gujarati Phonation Contrasts

A
  • Indi
  • Aryan
  • India
  • 60 million speakers
    E.g. ba̤r “outside” vs b̤ʱar “burden”
42
Q

Voice Onset Time (VOT)

A

Difference in time between the release of a stop and the beginning of voicing in the following vowel

43
Q

Measuring VOT from a waveform

A

From the spike indicating
the release of the stop closure to the start of the oscillating pattern indicating the vibrations of the vocal folds in the vowel

44
Q

Positive VOT

A

Voicing begins after stop release

45
Q

Negative VOT

A

Voicing begins before stop release

46
Q

VOT in voiceless stop /p/ as [pʰ] word-initially

A

Long-lag VOT, aspirated

47
Q

VOT in voiced stop /b/ as [p] (=[b̥]) word-initially

A

Short-lag VOT, unaspirated

48
Q

VOT in voiced stop /b/ as [b]

A

Negative VOT, voiced

49
Q

In English, voiced [b] and voiceless (unaspirated) [p] are not ________

A

Contrastive (/b/ has voiced [b] and unaspirated [p] allophones)

50
Q

aspirated [pʰ] is contrastive compared to ___

A

voiced [b] and voiceless (unaspirated) [p]

51
Q

Thai contrasts

A

[pʰ], [p] and [b]

52
Q

Hawaiian contrasts

A

/p/ has [pʰ], [p] and [b] allophones (not contrastive)

53
Q

English contrasts low VOT and high _____positive/negative VOT

54
Q

Spanish contrasts low VOT and high _____positive/negative VOT

55
Q

Hindi 4-Way Contrast

A

Voiced [b]
Voiceless unaspirated [p]
Voiceless aspirated [pʰ]
Voiced aspirated [bʱ]

56
Q

Pre-voicing means the VOT is _____

57
Q

Measuring Negative VOT

A

Measure the distance between voicing in stop and voicing in vowel
* Voice bar in spectrogram
* Low amplitude regular oscillation in waveform

58
Q

If there is aspiration, VOT is _____

59
Q

Measuring positive VOT

A

Measure the distance between the burst and the onset of voicing
* Low amplitude aperiodic noise

60
Q

VOT times

A

Unaspirated< ~30msLightly aspirated< ~60msStrongly aspirated> ~60msAka ‘long lag’ VOT