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Теоретическая фонетика английского языка = English Theoretical Phonetics. Учебное пособие

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UNIT 2.
PHONEME AS A UNIT OF LANGUAGE
Speech sounds are produced by man’s organs of speech, travel in sound waves, and are perceived by man’s hearing mechanism as sounds of language functioning as units capable of dierentiating meanings of the words. It follows that speech sounds dier from each other in their physical (acoustic) properties, in the way they are produced by the organs of speech and in their features which take part or do not take part in dierentiating the meaning. It is possible to distinguish the following four aspects:
y articulatory; y acoustic; y auditory; y functional.
The articulatory / sound production aspect means that from the articulatory point of view every speech sound is a complex of denite coordinated and dierentiated movements and positions of speech organs. The movements and positions necessary for the production of a speech sound constitute its articulation.
The acoustic aspect means every speech sound is a complex of acoustic eects and has its physical (acoustic) properties, consisting of:
1) frequency; 2) spectrum; 3) intensity; 4) duration.
The auditory / sound-perception aspect involves the mechanism of hearing. It is a kind of psychological mechanism which reacts to the physical properties of speech sounds, selecting from a great amount of information only the one which is linguistically relevant.
The functional aspect is called so because of the role the sounds of language play in its functioning as medium of human communication.
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Unit 2. Phoneme as a Unit of Language
2.1. General Characteristics of Phonemes
When we talk about the sounds of a language, the term “sound” can be interpreted in two rather dierent ways. A linguist uses two separate terms. “Phoneme” is used to mean “sound” in its contrastive sense, e. g.: tie – die, seat – seed. “Allophone” is used for sounds which are variants of a phoneme. They usually occur in dierent positions in the word (i. e. in dierent environments) and hence cannot contrast with each other, nor be used to make meaningful distinctions.
V.A. Vasilyev dened the phoneme like this: “The segmental phoneme is the smallest (i. e. further indivisible into smaller consecutive segments) language unit (sound type) that exists in the speech of all the members of a given language community as such speech sounds which are capable of distinguishing one word of the same language or one grammatical form of a word from another grammatical form of the same word”.
The phoneme is a minimal abstract linguistic unit realized in speech in the form of speech sounds opposable to other phonemes of the same language to distinguish the meaning of morphemes and words.
Firstly, the phoneme is a functional unit. Function is usually under­stood to mean discriminatory function, that is, the role of the various components of the phonetic system of the language in distinguishing one morpheme from another, one word from another or also one utterance from another. It performs the following functions:
y constitutive: it constitutes words; y distinctive: it makes one word distinct from the other; y recognitive: it helps to recognize words.
Secondly, the phoneme is real and objective. That means that it is realized in speech of all English-speaking people in the form of speech sounds, its allophones. The sets of speech sounds, that is the allophones belonging to the same phoneme are not identical in their articulatory content though there remains some phonetic similarity between them. Let us consider the English phoneme [d], which when not aected by the articulation of the preceding or following sounds is a plosive, fore­lingual apical, alveolar, lenis stop. This is how it sounds in isolation or in such words as door [dɔ:] or darn [da:n], when it retains its typical articulatory characteristics. In this case the consonant [d] is called the principal allophone. At the same time there are changes in the articulation of allophones that occur under the inuence of the neighbouring sounds
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2.1. General Characteristics of Phonemes
in dierent phonetic situations. Such allophones are called subsidiary. [d] is slightly palatalized before front vowels and the sonorant [j], e. g.: deal [di:l], day [deı], did you [dıd jə]. [d] is pronounced without any plosion before another stop, e. g.: bedtime [bedtaı m], good dog [gʋd dᴅg]. It is pronounced with the nasal plosion before the nasal sonorants [n] and [m], e. g.: sudden [sʌdn], admit [əd’mıt]. The plosion is lateral before the lateral sonorant [l], e. g.: middle [mıdl], bad light [bæd laıt]. Followed by [r] the consonant [d] becomes post-alveolar, e. g.: dry [draı], dream [dri:m]. Followed by the interdental [θ], [ð] it becomes dental, e. g.: breadth [bredθ], lead the way [li:d ðə weı]. When [d] is followed by the labial [w] it becomes labialized, e. g.: dweller [dwelə]. In the initial position [d] is partially devoiced, e. g.: dog [d ᴅg], dean [di:n]; in the intervocalic position or when followed by a sonorant it is fully voiced, e. g.: order [′ɔ:də], leader [li:də]; in the word-nal position it is voiceless, e. g.: road [rəʋd].
Allophones are arranged into functionally similar groups, that is groups of sounds in which the members of each group are not opposed to one another, but are opposable to members of any other group to distinguish meanings in otherwise similar sequences. But the allophones which are realized in speech do not correspond exactly to the allophone predicted by this or that phonetic environment. They are modied by phonostylistic, dialectal and individual factors.
Thirdly, allophones of the same phoneme function as the same linguistic unit. The native speaker is quite readily aware of the phonemes of his language but much less aware of the allophones. The reason is that the phonemes dierentiate words like tie and die from each other. Allophones have no such function. At the same time allophones of each phoneme possess a bundle of features that makes this phoneme functionally dierent from all other phonemes of the language. This functionally relevant bundle of articulatory features is called the invariant of the phoneme. Neither of the articulatory features that form the invariant of the phoneme can be changed without aecting the meaning. All the allophones of the phoneme [d], for instance, are occlusive, forelingual, lenis. If occlusive articulation is changed for constrictive one [d] will be replaced by [z], e. g.: breed [bri:d] – breeze [bri:z]. [d] will be replaced by [g] if the forelingual articulation is replaced by the backlingual one, e. g.: dear [dıə] – gear [gıə]. The lenis articulation of [d] cannot be substituted by the fortis one because
13
Unit 2. Phoneme as a Unit of Language
it will also bring about changes in meaning, e. g.: ladder [′lædə] – latter [′lætə].
The articulatory features which form the invariant of the phoneme are called distinctive or relevant. To extract a relevant feature of the phoneme it is necessary to oppose it to some other phoneme in the same phonetic context. If the opposed sounds dier in one articulatory feature and this dierence brings about changes in the meaning of the words the contrasting features are called relevant. For example, the words port [pɔ:t] and court [kɔ:t] dier in one consonant only. Both sounds are occlusive and fortis, the only dierence being that [p] is labial and [k] is backlingual. Therefore it is possible to say that labial and backlingual articulations are relevant in the system of English consonants.
The articulatory features which do not serve to distinguish meaning are called nondistinctive, irrelevant or redundant. It is impossible in English to oppose an aspirated [p] to a non-aspirated one in the same phonetic context to distinguish meanings. That is why aspiration is a non­distinctive feature of English consonants.
If an allophone of some phoneme is replaced by an allophone of a dierent phoneme the meaning of the word is inevitably aected. If an allophone of the phoneme is replaced by another allophone of the same phoneme the invariant of the phoneme is not modied and consequently the meaning of the word is not aected. When the vowel [i:] is fully long in such a word as sheep [ʃi:p], for instance, the quality of it remaining the same, the meaning of the word does not change.
Fourthly, the phoneme is abstract or generalized and that is reected in its denition as a language unit. It is an abstraction because we make it abstract from concrete realizations for classicatory purposes.
The abstractional and material aspects of the phoneme have given rise to the appearance of transcription. Transcription is a set of symbols representing speech sounds. This set of symbols diers according to whether the aim is to indicate the phoneme, i. e. a functional unit as a whole, or to reect the modications of its allophones as well.
The rst type of notation, the broad or phonemic transcription, provides special symbols for all the phonemes of a language.
The second type, the narrow or allophonic transcription, suggests special symbols including some information about articulatory activity of particular allophonic features.
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2.2. Main Trends in Phoneme Theor y
The broad transcription is mainly used for practical expedience, the narrow type serves the purposes of research work. The type of broad transcription, rst introduced by V.A. Vasilyev, is used in our country.
The narrow or phonetic transcription provides special symbols to denote not only the phoneme as a language unit but also its allophonic modications. The symbol [h], for instance, indicates aspirated articulation, e. g.: [kʰeit] – [skeit].
Table 2. Broad and Narrow Transcription Variations
Sample Broad Transcription Narrow Transcription Please [pliz] [pḷ i:z] Kill [kɪl] [kʰ ɪɫ]
2.2. Main Trends in Phoneme Theory
The mentalistic or psychological view regards the phoneme as an ideal “mental image” or a target at which the speaker aims. According to this conception allophones of the phoneme are varying materializations of it. This view was originated by the founder of the phoneme theory, the Russian linguist I.A. Baudouin de Courtenay.
The functional view regards the phoneme as the minimal sound unit by which meanings may be dierentiated without much regard to actually pronounced speech sounds. Meaning dierentiation is taken to be a dening characteristic of phonemes.
Thus the absence of palatalization in the light [l] and palatalization of the dark [ł] in English do not dierentiate meanings, and therefore [l] and [ł] cannot be assigned to dierent phonemes but both form allophones of the phoneme [l]. This view is shared by N. Trubetskoy, L. Bloomeld, R. Jakobson, M. Halle.
The functional view of the phoneme gave rise to a branch of linguistics called phonology or phonemics which is concerned with relationships between contrasting sounds in a language. Its special interest lies in establishing the system of distinctive features of the language concerned.
The abstract view of the phoneme regards phonemes as essentially independent of the acoustic and physiological properties associated with them, that is of speech sounds. This view of the phoneme was pioneered by L. Hjelmslev and his associates in the Copenhagen Linguistic Circle, H.J. Uldall and K. Togby.
15
Unit 2. Phoneme as a Unit of Language
The views of the phoneme discussed above regard the phoneme as an abstract conception existing in the mind but not in the reality, that is in human speech, speech sounds being only phonetic manifestations of these conceptions.
The physical view, propounded by D. Jones and shared by B. Bloch and G. Trager, regards the phoneme as a “family” of related sounds satisfying certain conditions:
y the various members of the “family” must show phonetic similarity
to one another, in other words be related in character;
y no member of the “family” may occur in the same phonetic context
as any other.
2.3. Phonemic Inventory
The aim of the phonological analysis is, rstly, to determine which dierences of sounds are phonemic (relevant for the dierentiation of the phonemes) and which are non-phonemic and, secondly, to nd the inventory of the phonemes of a language. The procedure of identifying the phonemes of a language as the smallest language units has several stages:
y the determining of the minimum segments and recording them
graphically by means of allophonic transcription. To do this an analyst gathers a number of sound sequences with dierent meanings and compares them. For example, the comparison of [sti:k] and [stæk] reveals the segments (sounds) [i:] and [æ], comparison of [sti:k] and [spi:k] reveals the segments [st] and [sp] and the further comparison of these two with [ti:k] and [tæk], [si:k] and [sæk] splits these segments into smaller segments [s], [t], [p]. There is no comparison that allows dividing [s] or [t] or [p] into two, therefore it is possible to single out the minimal segments opposing them to one another in the same phonetic context;
y the arranging of sounds into functionally similar groups.
There are two most widely used methods of nding it out.
The distributional method is mainly used to group all the sounds pronounced by native speakers into phonemes according to the two laws of phonemic and allophonic distribution:
y allophones of dierent phonemes occur in the same phonetic
context;
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2.4. Phonological Opposition
y allophones of the same phoneme never occur in the same phonetic
context.
The sounds of a language combine according to a certain pattern characteristic of this language. Phonemic opposability depends on the way the phonemes are distributed in their occurrence. If more or less dierent sounds occur in the same phonetic context they should be allophones of dierent phonemes. In this case their distribution is contrastive. If similar speech sounds occur in dierent positions and never occur in the same phonetic context they are allophones of one and the same phoneme. In this case their distribution is complementary.
The semantic method is used to determine the phonemic status of sounds which are not easily identied from phonological point of view. The method is based on a phonemic rule that phonemes can distinguish words and morphemes when opposed to one another. The semantic method of identifying the phonemes of a language attaches great signicance to meaning. It consists in systematic substitution of the sound for another in order to ascertain in which cases such substitution leads to a change of meaning. This procedure is called the commutation test. It consists of nding minimal pairs of words and their grammatical forms. For example, an analyst arrives at the sequence [pın]. He substitutes the sound [p] for the sound [b] or [s], [d], [w]. The substitution leads to the change of meaning, e. g.: pin, bin, sin, din, win. This would be an evidence that [p], [b], [s], [d], [w] can be regarded as allophones of dierent phonemes.
2.4. Phonological Opposition
Both methods help to distinguish phonemes by establishing their distinctive phonological oppositions. To be dierent, two phonemes should have at least one relative distinctive phonological feature. If two phonemes [p] and [b] are compared, they are both labial, bilabial, occlusive, plosive, noise consonants. What diers them is that [p] is voiceless and [b] is voiced. They are dierent only in one relative distinctive phonological feature and they are a minimal pair as they exist in words pen [pen] and Ben [ben]. The conclusion is that [p] and [b] are two dierent phonemes and they are in phonological opposition.
Phonological oppositions can be:
y single, e. g.: [f] – [v] are constrictive noise fricative labio-dental,
where [f] voiceless, [v] voiced;
17
Unit 2. Phoneme as a Unit of Language
y double, e. g.: [b] – [d], where [b] is occlusive noise plosive labial
bilabial voiced, and [d] is occlusive, noise plosive forelingual apical­alveolar voiced;
y multiple, e. g.: [k] – [s], where [k] is occlusive noise plosive
backlingual voiceless, and [s] is constrictive noise fricative apical-alveolar voiceless. The only features they have in common are that they are both noise and voiceless.
Every speech sound is characterized by a number of distinctive features, but not all of which are equally important for communication. For example, lack of aspiration of the sounds [p], [t], [k] shows a foreign accent but will not hinder communication. So the question is to decide which of the features are relevant and which are irrelevant.
Phonological analysis makes a conclusion that:
y each phoneme is characterized by a certain number of phonologically
relevant features which are constant and distinctive, as they never change, no matter what position this phoneme is and they always distinguish this phoneme from any other;
y each allophone has all phonologically relevant features of its
phoneme plus a number of irrelevant features which distinguish one allophone from another allophone of the same phoneme.
Oppositions in the system of English consonants:
y lenis vs. fortis opposition based on the force of articulation (voiced
vs. voiceless), e. g.: port [pɔ:t] and bought [ bɔ:t];
y opposition based on the active organ of speech, e. g.: wet [wet] and
vet [vet] (bilabial vs. labial);
y opposition based upon the type of obstruction, e. g.: cat [kæt] and
hat [hæt] (occlusive vs. constrictive).
Oppositions in the system of English vowels:
y opposition between monophthongs, e. g.: dark [d a: k] a nd duck [d ʌ k]
([ɑ:] vs. [ʌ]);
y opposition between monophthongs and diphthongs, e. g.: let [let]
and late [leɪt] ([e] vs. [eɪ]);
y opposition between diphthongs, e. g.: chair [ʧeə] and cheer [ʧɪə]
([eə] vs. [ɪə]).
The length of a vowel cannot be regarded as its relative distinctive feature and can inuence only the accent, but not the meaning of the word.
18
2.4. Phonological Opposition
Questions
1. How many aspects of speech sounds can be dierentiated? What is
the essence of each aspect?
2. What is the phoneme?
3. What is an allophone?
4. What are the three aspects of a phoneme?
5. What allophones are called principal / subsidiary?
6. What is the invariant of the phoneme?
7. What is the dierence between distinctive and non-distinctive
articulatory features?
8. What types of transcription do you know?
9. What are the main trends in phoneme theory?
10. What are the methods of phonological analysis?
11. What is the dierence between relevant and irrelevant features of
sounds?
12. What are the types of phonological oppositions? Illustrate each
type with an example.
13. What are the oppositions in the system of English consonants?
14. What are the oppositions in the system of English vowels?
15. Why is length a non-distinctive feature of vowels?
Pract i c al Tasks
1. Make a glossary of main notions and give their denitions.
2. Choose the words in which the initial sounds are in phonological opposition according to the distributional method. Prove your point of view.
Tablet, mapping, belong, Samuel, broken, stand, family, patch, slam,
absolutely, at, character, badminton, slope, jam, black.
3. Dene the distinctive features that make the oppositions phonologically relevant.
cap – cab latter – ladder coal – goal supper – suer park – part raider – razor till – chill murder – merger share – chair thigh – shy save – shave log – long rub – rum bad – ban thick – sick
19
Unit 2. Phoneme as a Unit of Language
4. Match the words to obtain minimal pairs. State the type of
opposition.
Catch, pip, cheap, sap, he, jail, lap, pair, say, sink, rip, fail, lass, Sam, mink, cap, tear, she, lay, heap, match, lane, merry, knock, rice, berry, right, moat, dock, hair, fame, dare, same, vain, bee, thee, boat.
5. Give ve examples of groups of words where one and the same long phoneme is realized in allophones of dierent duration. Dene in which word the sound is the longest / the shortest.
Table 3. Allophones of Dierent Duration
[i :] [ɜ:] [u :] [ɔ:] [ɑ:]
6. Give ve examples of each position.
Table 4. Oppositions
Single opposition Double opposition Multiple opposition
7. Give theoretical and practical proofs to explain constitutive, recognitive and distinctive functions of phonemes.
8. Answer the questions using one-word / phrase answers.
1. How many aspects of speech sounds are distinguished?
2. The founder of the phoneme theory is … .
3. Features of phonemes involved in the dierentiation of the words are called … .
4. What is the principal function of the phoneme?
5. The articulatory features which do not serve to distinguish meaning are called … .
6. The phonemes of a language form a system of … .
7. The procedure of nding minimal pairs of words and their grammatical forms is called … .
8. If more or less dierent sounds occur in the same phonetic context their distribution is … .
9. Phonological oppositions can be … .
10. Lenis vs. fortis opposition is based on … .
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