Yanu

Yanu

Selasa, 25 November 2014

Phonemic Analysis



Phonemic analysis involves 2 things:
       Establishing the set of phonemes in language
Definition of phoneme.
A phoneme is a basic unit of a language's phonology, which is combined with other phonemes to form meaningful units such as words or morphemes
Phonemic
       Figure out the phonological rules that determine the environments where allophone occur.
Contrastive
       Two sound are contrastive if interchanging the two can change meaning of the word
                English /p/ - /b/:
                                cap [kæp] vs cab [kæb]\
                Hindi /p ͪ/ - /p/
                                ‘fruit’ [p ͪǝl] vs ‘moment’ [pǝl]
Types of Transcription
       Hindi /p ͪ/ - /p/
                                 ‘fruit’ [p ͪǝl] vs ‘moment’ [pǝl]
Need to represent more than just the phoneme /p/ to show how contrast works. How?
Add a diacritic [ ͪ ] to the phoneme symbol [p]
Minimal pair
       Two (or more) words that differ only by a single sound in the same position and that have different meanings
                - m/n: [sm] ‘sum’ vs [sn] ‘sun’
                - k/g: [kɪl] ‘kill vs [gɪl] ‘gill’
                - s/ʃ: [mɛsi] ‘messy’ vs [mɛʃi] ‘meshy’
                - i/ɪ/ɛ: [fil] ‘feel’ vs [fɪl] ‘fill’ vs [fɛl] ‘fell’
       While whole sounds can contrast, so can parts of sounds (i.e., feature):
                - voicing: [tɪl] ‘till’ vs [dɪl] ‘dill’
                - Place: [sm] ‘sum’ vs [sŋ] ‘sung’
                - Manner: [mɛs] ‘mess’ vs [mɛt] ‘met’
Phoneme vs Allophone
       Phoneme:
                - A minimal pair of sound that serves to distinguish meaning between words
- May be composed of a set of sounds (allophones) that are considered by native speakers to be the ‘same’ sound.
       Allophone: the different phonetic realization of a phoneme.
Top [t ͪap]            Stop [stap]          Little [lɪɾl]            Kitten [kɪʔn]
Phoneme: /t/
Allophone: [t ͪ] [t] [ɾ] [ʔ]
Distribution
       Contrastive distribution: when the sounds can occur in the exact same phonetic environment (thereby forming a minimal pair), e.g.,
                - Initial: [su] ‘sue’, [zu] ‘zoo’
                - Medial: [bsɪŋ] ‘bussing’, [bzɪŋ] ‘buzzing’
                - Final: [kloƱs] ‘close’, [kloƱz] ‘clothes’
       Complementary distribution: when two (or more) phonetically similar sounds never occur in exactly the same environment, but in complementary or mutually-exclusive environments
       p/p ͪ:            [spæt] ‘spat’                      [p ͪæt] ‘pat’
                                                [spul] ‘spool’                      [p ͪul] ‘pool’
                                                [spik] ‘speak’                      [p ͪik] ‘peak’
Sounds in complementary distribution
       …are allophones of a single phoneme
       …do not occur in minimal pair
       …are noncontrastive
       …are predictable (based on environment)
Expressing environment
       Phonemic transcription is written in slash //
       Phonetic (allophonic) transcription is written in bracket [ ]
       /__ ]word 
       The symbol slash “/” means “in the environment”
       A long underline stands for the place where the allophone occurs relative  to its neighbors.
       /__ ]word  means ‘in the environment immediately before the end of a word’.
The following expression:
1. /____ θ
is to be read “in the environment before theta” or for short  just “before theta”
2.    /              consonant           ________
                  voiceless
is to be read after a voiceless consonant
3. Square brackets in phonology mean “and”; hence   
consonant
                                 voiceless            
means “a segment which is consonant and is voiceless”
4. Symbol “+” and “ – “ are used before feature names that a segment either has, or does not have, the phonetic property that a feature designates.
                + consonant = consonant
                -voice = voiceless
/   +consonant       _____
                                     - voice
5. The notation given below can be read
                “at the end of a word”.
                  / ____ ]word
                “at the beginning of a word” would be
                /[word_______
6. The sound which occurs to the left of the arrow is the underlying phoneme, while the sound to the right of the arrow is the allophone.
                 a.           /l/ à [ɫ]/___ ]word
                 b.           /l/ à[ˬĪĪ] /    +consonant      _____
                                                         + voiceless 
Formalizing Phonological Rules
       Rule of word-final velarization in English
                /l/ à [ɫ]/___ ]word
                means  “the phoneme /l/ becomes [ɫ] in the environment ____ ] word  [faɪɫ, fuɫ, aɫ]
       /l/ à[ˬĪĪ] /    +consonant     
                                         + voiceless      
                The allophone [ˬĪĪ] occurs after a voiceless consonant [sˬĪĪaɪt, pˬĪĪaƱ, kˬĪĪɪŋ]
Level of Representation
       Two level of representation
                1. phonemes=underlying form
                2. allophone=surface form
       General form
                1. underlying form àsurface form/ environment
                2. /x/ à[Y] / A__B
                     - The phoneme /X/ is pronounce as the allophone [Y] when it occurs between A and B
Underlying phoneme
       The general principle is that it is the sound which appears in the widest variety of environments which is the underlying phoneme’
       Thus it is [p], not [p ͪ] which is the underlying phoneme in English
                                /p/                                         /k/                                          /t/
                [p]                          [p ͪ]            [k]              [k ͪ]    [t]                    [t ͪ]
·         Example
A

B

Blue
[blu]
Plow
[pļaw]
Gleam
[glim]
Clap
[kļæp]
Slip
[slɪp]
Clear
[kļiɹ]
Flog
[flɔg]
Play
[pļej]
Leaf
[lif]


State the environment in terms of the natural class: [p k] = voiceless stops
Example: /l/ rules in English
/l/ à [ļ] after a word initial voiceless stop
/l/ à [l] elsewhere
We don’t need 2 rules for voiceless /l/:
/l/ à [ļ] /after [p]
/l/ à [ļ] / after [k]
/l/ à [ļ] / after voiceless stop
       The underlying phoneme is usually the sound which occurs in the elsewhere environment.
        Example:
        slight                     plow
        [slaɪt]                    [plaƱ]   Underlying form
       
        [sˬĪĪaɪt]                                [pˬĪĪaƱ]                                                /l/ voicing
        [sˬĪīaɪʔt]                              -                              final glottalization of
        [sˬĪīaɪʔt]                              [pˬĪĪaƱ]                voiceless stop   
        Surface form = allophonic/phonetic transcription
File         slight                     wealth  listen
/faɪl/     /slaɪt/                   /wɛlθ/   /’lɪsən/                                 Underlying forms
-              sˬĪĪaɪ     t              -                              -                  /l/ devoicing
-              -                              wɛˬɫθ    -                                /l/ dentalization
faɪɫ         -                              -                              -                  /l/ velarization
[‘faɪɫ] [sˬĪĪaɪt]   [‘wɛˬɫθ]               [’lɪsən]  surface forms
Allophone often have a phonemic motivation.
       Slight [sˬĪīaɪt]                    plow [pˬĪĪaƱ]
       For example The [ˬĪĪ] allophone may be the result of coarticulation with the preceding voiceless sound.
       Wealth [‘wɛˬɫθ]                  filthy [fɪˬɫθi]
The dental [ˬɫ] also may be attributed to coarticulation with the following dental sound.
       A sound  which is a phoneme in one language may be an allophone in another language . Conversely, a sound which is an allophone in one language may be a phoneme in another
       Consider the case of the flap [ɾ] in North American English.
       ‘city’                      ‘sit’
                /sɪti/                      /sɪt/                       Underlying form
                                                                                Rules:
                sɪɾi                          -                              flapping
                [sɪɾi]                      [sɪt]                       surface form
The rules is a s follow
                /t/ à [ɾ] / [+vowel] ____   +vowel
                                                                     -stress
The phoneme /t/ is realized as /ɾ/ when it is preceded by a vowel and followed by a stressless/unstress vowel 
In North American English
       [ɾ] is an allophone of /t/ phoneme. The environment  for [ɾ] is between 2 vowels of which the second is stressless.
                                                Phonemic                            Phonetic
                data                       /’deɪtə/                                               [‘deɪſə]
                latter                     /’lætɚ/                                 [‘læſɚ]
                eating                   /’itɪŋ/                                    [‘iɾɪŋ]
                Ottoman              /’ɑtəmən/                          [‘ɑɾəmən]
                Rhetoric               /’ɹɛtəɹɪk/                             [‘ɹɛɾəɹɪk]
                Automatic           /,ɔtə’mætɪk/                     [,ɔɾə’mæɾɪk]
       /t/ does not appear as the [ɾ] allophone because it fails to follow a syllabic sound (tan, guilty, active) or because it fails to precede a syllabic sound (cat, Atkins).
                                                                Phonemic                            Phonetic
                tan                                         /’tæn/                                  [tæn]
                attend                                  /ə’tɛnd/                               [ə’tɛnd]
                guilty                                     /’gɪlti/                                   [‘gɪlti]
                cat                                          /’kæt/                                   [‘kæt]
                active                                    /’æktɪv/                               [‘æktɪv]
                Atkins                                   /’ætkɪnz/                            [’ætkɪnz]
In Spanish
       /t/ and /ɾ/ are separate phoneme in Spanish. It is demonstrated by minimal pairs such as the following:
                [‘pita] ‘century plant’ vs [piɾa] ‘funeral pyre’
       The difference between [t] and [ɾ] signals a different in meaning. [t] and [ɾ] are in contrast and separate phoneme, /t/ vs /ɾ/.
       Comparing English and Spanish, we see that the [t] vs [ɾ] difference in allophonic (non-distinctive) for English, but phonemic (distinctive) for Spanish. Thus, in this area, the two language are phonetically similar but phonologically different.
       Both English and spanish have a [d] and a [ð] (the voiced dental fricative).
       In English we know that the 2 sounds are separate phonemes, because minimal pairs exist:
                die [daɪ] vs thy [ðaɪ]
                bayed [beɪd] vs bathe [beɪð]
                den [dɛn] vs the [ðɛn]
       But in Spanish, there are no such pairs.  One can determine that [d] and [ð] are allophonic variants:
                [daðo]                  ‘given’
                [deðo]                  ‘finger’
                [usteð]                 ‘you (polite)’
                [donde]                               ‘where’
                [de ðonde]         ‘from where’
       From these data indicate that [ð] occurs only after vowel, while [d] is the elsewhere allophone of the same phoneme.
       Phonemes: /t/, /d/, /ɾ/
        Phonological rule: /d/ Spirantization
                /d/ à [ð] / [+vowel] ______
                The phoneme /d/ is realized a [ð] when it follows a vowel.
                Spirant is fricative
                Spirantization: change from stop to fricative.
                /d/ is stop and [ð] is fricative
v  Derivations
                1. ‘given’                ‘you’                    ‘where’
                     /dado/               /usted/              /donde/                underlying forms
                     ð                            ð           -                   /d/                  spirantization
                      [daðo]               [udteð]             [donde]               surface forms
                 
                2. /lado/               underlying form
                                                Rules:
                    laðo                   Spirantization
                    [laðo]                surface form
       The rule of spirantization in Spanish is really a more general rule applying to all voiced stops (/b/, /d/, /g/), not just /d/.
                  +stop  à [fricative] / [+vowel] ______
                  +voice
       The differences in phonological organization between English and Spanish reflect a different division of phonetic space.
       Phonetic space as made up of multiple dimensions.
       We place [d] at the center of this space, and in different directions show [ð]as differing from [d] minimally in its fricative character (“continuancy”); [ɾ] differing from [d] in having short, weak closure, and [t] differing minimally from [d] in voicing
       [t]                                                           Voicing
                                                                               
                                                                                Closure
                [d]            [ɾ]
                                                                                Continuancy
                                   [ð]
Spanish
/t/, /ɾ/, and /d/ with the latter having 2 allophones [d] and [ð]
English has /d/, /ð/, and /t/, with the latter having 2 allophones [t] and [ð]
       The chart shows that the sound systems of languages can differ in their phonological organization, as well as in the sounds that they contain. In principle, we could imagine two languages that had exactly the same sounds, but a radically different phonological organization. This would happen if the two languages selected different phonetic distinctions to be contrastive vs. non-contrastive. Using the phonemic method, we would analyze such languages as having the same set of sounds, grouped into phonemes in two different ways. 

Sources:
http://www.linguistics.uscb.edu/faculty/gordon/107/ling107.week1&2.pdf
Hayes2009-02.pdf

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