1 English Phonetics and Phonology Lesson 3B Consonant sounds.
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Transcript of 1 English Phonetics and Phonology Lesson 3B Consonant sounds.
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English Phonetics and Phonology
Lesson 3B
Consonant soundsConsonant sounds
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BREAKFAST
/b/ /r/ /k/ /f/ /s/ /t/
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Speech sounds can be divided into three main types:
Stops (or plosives) and affricates Fricatives Vowels and approximants
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We will first focus on stops and fricatives which are classified according to The place in which they are
articulated Whether they are voiced or not
(vibration of vocal folds) Whether they are oral or nasal (for
stops only)
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Places of articulation
1. Bilabial (lips)
2. Labio-dental (lips-teeth)
3. Interdental
Dental (teeth)
4. Alveolar ridge
5. Post-alveolar
6. Palatal (palate)
7. Velar (velum)
8. Glottal (glottis)
9. Uvula (uvulum)
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Voicing: A consonant may be
Voiced (lenis) Voiceless (fortis)
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A stop is composed of three phases
Closure Hold (the passage of air from the
lungs is blocked) Release – the difference in air
pressure between the area behind the closure and the atmosphere results in a small explosion
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The place of articulation is where the passage of air is blocked
For example /t/ and /d/ are both produced by blocking the passage of air at the alveolar ridge/dental region
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English plosives (stops)
/p/ and /b/ are voiceless and voiced bilabials i.e. produced with both lips
/t/ and /d/ are voiceless and voiced alveolars
/k/ and /g/ are voiceless and voiced velars
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What consonant pair is this?
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That’s right! /p/, /b/
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And this?
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/k/, /g/
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What is the difference between these two
slides?
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In the first (/b/, /p/) the passage of air to the nose is blocked by the raised velum, in the second this passage is
open, giving us a nasal. What consonant is it?
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It’s /m/
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Let’s look at other positions – in the alveolar position we have /t/ and /d/, and the nasal /n/:
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In a similar way at the velum we have /k/ and /g/, and the nasal //:
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Fricatives
Are created by forming a constriction through which air from the lungs may pass, but not freely.
This lack of freedom causes audible turbulence, or friction, hence the name fricative.
As for stops they may be voiceless or voiced .
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Let’s look at a fricative pair which causes non-native speakers of English a lot of trouble and //:
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Air passes through a small gap between the tongue and the upper teeth causing a low friction sound:
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In the alveolar fricatives /s/ and /z/, the friction noise is quite loud, as air hits the upper teeth causing a hiss.
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What fricative pair is represented here?
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That’s right - /f/,and /v/
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And here?
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This is the post-alveolar pair // and //. Note that a small shift of the tongue from the /s/, /z/ position directs the flow of air onto the alveolar ridge.
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Affricates
These may be considered as stop + fricative
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An affricate is composed of the following stages
Closure Hold A small opening instead of the
complete opening of the stop. This small opening causes friction
just like a fricative
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Affricates - articulation
The place of articulation is always the same for both stages
Affricates are always either voiced or unvoiced
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In English we have two affricates:
// church and // George Both are realised in the post-
alveolar position
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Here are the two main phases.
1. Hold
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2. Release with constriction
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Here is the IPA consonant chart
White represents standard British English consonants, light blue possible allophones, and dark blue exotic consonants
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Any questions ???
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http://davidbrett.uniss.it/index These slides were produced by David Brett, a
phonetics expert who teaches at the University of Sassari. If you want to practice consonant sounds, then log on to his website (address above), then:
click on “The articulation of speech sounds” in the Index click on “Match phonemes with pictures” do the exercises for “Consonants: diagrams, symbols and definitions”
THESE EXERCISES WILL HELP YOU A LOT TO PRACTICE FOR YOUR EXAM