Assimilation, Dissimilation, T-allophones. Flap T
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Transcript of Assimilation, Dissimilation, T-allophones. Flap T
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When a word’s pronunciation is
affected by sounds in a neighboring word, we call this process assimilation.
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ASSIMILATION
Direction of change
Consonant
change
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DIRECTION OF CHANGE
Regressive
The sounds assimilate
dare influenced
by the succeeding
sounds
Progressive
The sounds assimilated
are affected by
the pronunciation of the preceding sounds
Coalescent
The first sound and the second sound come together to
create a third sound with features
from both original sounds
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The phoneme that comes first affects
the one that comes after it.
E.G:
Those years / ðəʊʒ jiəs
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Pronunciation of plurals
• Voiced sounds /s/ ->
/z/
- girls -> /ˈɡɝːlz /
- pictures ->
/ˈpɪktʃərz/
- knees -> /ˈniːz /
- wives -> /ˈwaɪvz /
- oruselves ->
/aʊərˈselvz/
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• Unvoiced sounds /s/ -> /s/
- cups -> /ˈkəps/
- sports -> / ˈspɔːrts /
- snakes -> / ˈsneɪks /
- reefs -> / ˈriːfs /
- dogs -> /ˈdɑːɡz /
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• Exception “es” -> /iz/
- houses -> / ˈhaʊzɪz/
- buses -> /ˈbʌsəz /
- dishes -> /ˈdɪʃəz/
- dresses -> /ˈdresəz /
- boxes -> /ˈbɑːksəz/
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Pronunciation of possessives
•Voiced sounds |’s| -> /z/
- girls’ pictures -> / ˈɡɝːlz
ˈpɪktʃərz /
- bob’s parents -> / ˈbɑːbz
ˈperənts /
- man’s house ->/ ˈmænz ˈhaʊs
/
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•Unvoiced sounds |’s| -> /s/
- student’s book -> /ˈstuːdənts
ˈbʊks/
- mark’s dog -> /ˈmɑːrks
/
- pete’s son -> /ˈpiːts ˈsən/
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Pronunciation of the 3rd person singular
•Voiced sounds /s/ -> /s/
- he writes -> / hi ˈraɪts /
- she speaks -> /ʃi ˈspiːks /
- it cloaks ->/ ˈɪt kloʊks /
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• unvoiced sounds /s/ -> /z/
- he reads -> / hi riːdz /
- she utters -> / ʃi ˈʌtərz /
- it groans ->/ ˈɪt ˈɡroʊnz /
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Pronunciation of Past tense and Past participle
• Voiced sounds |ed| ->
/d/
- hummed -> /ˈhəmd/
- smiled -> /ˈsmaɪld/
- uttered -> / ˈʌtərd /
- shined ->/ˈʃaɪnd/
- played ->/ ˈpleɪd/
- spelled ->/ ˈspeld /
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• Unvoiced sounds |ed| ->
/t/
- laughed -> /ˈlæft /
- talked -> /ˈtɔːkt /
- worked -> /ˈwɝːkt /
- jumped -> / ˈdʒəmpt /
- asked -> /ˈæskt/
- cooked -> /ˈkʊkt /
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The sounds assimilated are influenced
by the following sounds.
E.G:
This year / ðij jiə /
Bright color /braik kalə/
Light blue /laip blu/.
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• News -> / ˈnjuːz /
Newspaper -> /nju:speipər/
• Goose -> /gu:s/
Gooseberry -> /gu:zbəri/
• Five -> /faiv/
Five pence -> /faifpəns/
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Is a type of reciprocal assimilation, in
which:
Sound A + Sound B
Sound C
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Rule Examples
/s/ /ʃ/ Issue
This year
/z/ /ʒ/ Pleasure
Does your…?
/t/ /tʃ/ Stature
+ /y/ Is that your…?
/ts/ /tʃ/ She lets your...
He hates you.
/d/ /dʒ/ Procedure
Would you…?
/dz/ /dʒ/ She neds you.
He needs your
advice.
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CONSONANT
CHANGE
Assimilation Place
of articulation
Assimilation
Manner of
articulation
Assimilation of
voicing
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It consists in the
voicing or
devoicing of a
segment
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Only regressive assimilation of voice
E.G:
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Assimilation of place is
noticeable in the regressive
assimilation of alveolar
consonants.
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1. Progressive assimilation
Is relatively uncommon. It may occur when
a plosive is followed by a syllabic nasal and
the nasal under goes assimilation to the
same place of articulation as the preceding
plosive.
E.G:
* /n/ → /m/ after /p, b/
*/ n/ →/ŋ/ after / k, g/
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2. Regressive assimilation
Commonly seen in some prefixes, such
as:
*in- → indirect, insane,
*im- → impolite, imbalance, immoral.
*il- → illegal
*ir- → irregular
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It occurs when one sound changes the
manner of its articulation to become similar
in manner to a neighboring sound.
E.G:
* ‘Get some of that soup’ → /gɛssʌm v ðas
suːp/
*‘good night’ → /gʊn naɪt/
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Note: /ð/ follow a plosive or nasal at the end of a preceding word.
Eg: get them /get ðəm/ → /gettəm/
in the /in ðə/ → /innə/
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This process occurs when adjacent sounds become more different
from each other.
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The American English t sound includes
the following four common allophones:
• Remain a regularly aspirated t sound.
• Be pronounced like a quick d (also
called an alveolar tap).
• Become a glottal stop.
• ave no sound at all.
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Pattern #1: True t sound
/t/
E.G:
* attach → /ə ˈtæʧ/
* pretend → /prɪ
ˈtɛnd/
* italic → /ɪ ˈtæl ɪk/
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Pattern #2: Quick d sound
/t ̬/
E.G:
* daughter → /ˈdɔt ̬ ɚ/
* computer → /kəm ˈpjut ̬
ɚ/
* settle → /ˈsɛt ̬ l/
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Pattern #3: Glottal stop /ʔ/
E.G:
* partner → /ˈpɑrʔ nɚ/
* certain → /ˈsɚʔ n/
* fitness → /ˈfɪʔ nəs/
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Pattern #4: Omitted t sound /t/
a) omitted t sound /t/
E.G:
* center → /ˈsɛnt ɚ/
* gentle → /ˈʤɛnt l/
*advantage → /əd ˈvænt
ɪʤ/
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Pattern #4: Omitted t sound /t/
b) omitted t sound
/t/
* prints → /prɪnts/
* acts → /ækts/
* accepts→ /ək
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What is the flap t ?
In American English, the / t / phoneme
can be pronounced in several ways,
depending on its position within a word
or phrase. in some positions, it can be
pronounced as the so-called flap t,
which sounds like a short d or, more
precisely, like the quick, hard r sound.
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When is the flap t used?
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When is the flap t not used?
Anywhere other than the positions listed in the above table, for
example:
o before a consonant: central, Atkins, pit bull
o before a stressed vowel inside a word: a
táble, photógraphy, seventéen
o before a stressed vowel at end of word: intó
o after a consonant other
than /n/, /r/ or /l/: listing, after, helicopter
o at the beginning of a phrase: Today I’ll show them!
o at the end of a phrase: Who is it?
o before the syllabic n: button