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НЕДЕЛЯ 3 LECTURE 2. THE SYSTEM OF ENGLISH PHONEMES
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- 1. Consonants
| НЕДЕЛЯ 3
LECTURE 2. THE SYSTEM OF ENGLISH PHONEMES The previous section has been concerned with the aims and methods of phonological analysis. In this section we are going to give a brief and readable description of the problems which scholars face trying to describe the English sounds from the functional point of view. We shall try to explain what is understood by quality of a sound, what articulatory characteristics may be considered constituents of quality and to determine which of them are important enough to arrest our attention as phonologically relevant. By way of introduction we would like to remind you that there are two major classes of sounds traditionally distinguished by phoneticians in any language. They are termed consonants and vowels. It would be fair to mention that the distinction is based mainly on auditory effect. Consonants are known to have voice and noise combined, while vowels are sounds consisting of voice only. From the articulatory point of view the difference is due to the work of speech organs. In case of vowels no obstruction is made. In case of consonants various obstructions are made. So consonants are characterized by so-called close articulation, that is by a complete, partial or intermittent blockage of the air-passage by an organ or organs. The closure is formed in such a way that the air-stream is blocked or hindered or otherwise gives rise to audible friction. As a result consonants are sounds which have noise as their indispensable and most defining characteristic. What we have said makes it logic enough to consider each class of sounds independently. So we shall start with consonants. 1. Consonants On the articulatory level each consonant may be identified by stating two general facts about it: what sort of articulatory posture it is formed by; whereabout in the mouth (or pharynx) it is produced. Besides these major characteristics the particular quality of a consonant may depend on a lot of other factors, that is by what articulatory organ (or organs) an obstruction is made, how vocal cords work at the moment of production, what cavity is used as a resonator, what is the force of articulatory effect and many others. So in our view the particular quality of a consonant would be best thought of as a complex bundle of features. Each sound is known to have three aspects: acoustic, articulatory and auditory and therefore can be studied on these three levels. For the sake of analysis each aspect can be considered and described independently though we should take it reasonably obvious that there is no sharp dividing line between them. Trying to work out a classification of such complex units as speech sounds an analyst should specify those properties of sounds which are relevant to the subject under discussion, so the attempts to classify sounds should have a theoretical foundation. Besides, each classification should not only aim at linguistic description but it should be justified from "teaching of a language" point of view. Therefore it should try to include, if possible, both the principal relevant features and the ones that are redundant from phonological point of view but are considerably important for the articulation of the sound. Here we should note that phonological description of sounds will be made in terms of articulatory level. As to the classification of English consonants there are few ways of seeing the situation. According to V.A.Vassilyev primary importance should be given to the type of obstruction and the manner of production of noise. On this ground he distinguishes two large classes of consonants: a) occlusive, in the production of which a complete obstruction is formed; b) constrictive, in the production of which an incomplete obstruction is formed. The phonological relevance of this feature could be exemplified in the following oppositions:
Each of the two classes is subdivided into noise consonants and sonorants. The division is based on the factor of prevailing either noise or tone component in the auditory characteristic of a sound. In their turn noise consonants are divided into plosive consonants (or stops) and affricates. The following scheme might be helpful to understand the system built in accordance with the above-mentioned order of articulatory characteristics: Another point of view is shared by a group of Soviet phoneticians (authors of the book among them). They suggest that the first and basic principle of classification should be the degree of noise. Such consideration leads to dividing English consonants into two general kinds: A – noise consonants B – sonorants It is easy to see that the term "degree of noise" belongs to auditory level of analysis. But it is hardly necessary to point out that there is an intrinsic connection between articulatory and auditory aspect of describing speech sounds, such that sometimes it is impossible to account for the former except in terms of the latter. In the above-mentioned case it is the term of auditory level that defines the gharacteristic more adequately. Talking about sonorants it is necessary to mention that they are consonants that phoneticians have traditionally a lot of argument about. The point is that sonorants are sounds that differ greatly from all other consonants of the language. This is largely due to the fact that in their production the air passage between the two organs of speech is fairly wide, that is much wider than in the production of noise consonants. As a result, the auditory effect is tone, not noise. This peculiarity of articulation makes sonorants sound more like vowels than consonants. On this ground some of the British phoneticians refer some of these consonants to the class of semivowels, [r], [j], [w], for example. Acoustically sonorants are opposed to all other consonants because they are characterized by sharply defined formant structure and the total energy of most of them is very high. However, on functional grounds, according to their position in the syllable, [r], [j], [w] are included in the consonantal category, but from the point of view of their phonetic description they are more perfectly treated as vowel glides. According to the Soviet phoneticians sonorants are considered to be consonants from articulatory, acoustic and phonological point of view and can be classified according to all the principles of classification of consonants. Looking back on the problem of providing an accurate criterion for estimating classificatory value of various properties displayed by sounds we may say that the great articulatory and acoustic difference of noise consonants and sonorants could be very well relied upon in this respect. The phonological relevance of this factor (the degree of noise) could be proved by the following oppositions: [beik – mek] bake – make (noise consonant – sonorant) [vi:l – wi:l] veal – wheel (noise consonant – sonorant) The following scheme may illustrate the point of view shared by the authors of this book: Summarizing briefly we may emphasize the fact that the two above-mentioned characteristics, that is the degree of noise and the manner of articulation are considered essential enough from the classificatory point of view, no matter which of them comes first in the description of the system. We could add that any particular point of view will be judged by its effectiveness. Both above-mentioned classifications are valid, consistent and complete though we could assume that the latter is more preferable for teaching purpose because it is more concise and symmetrical. The place of articulation is another characteristic of English consonants which should be considered from the phonological point of view. The place of articulation is determined by the active organ of speech against the point of articulation. According to this principle the English consonants are classed into: 1) labial, 2) lingual, 3) glottal. The class of labial consonants is subdivided into: a) bilabial; b) labio-dental; and among the class of lingual consonants three subclasses are distinguished; they are: a) forelingual, b) medio-lingual and c) backlingual. The classification of consonants according to this principle is illustrated in the following scheme: The importance of this characteristic as phonologically relevant could be proved by means of a simple example. In the system of English consonants there could be found oppositions based on the active organ of speech and the place of obstruction.
Our next point should be made in connection, with another sound property, that is voiced – voiceless characteristic which depends on the work of the vocal cords. We should note that it has long been believed that from the articulatory point of view the distinction between such pairs of consonants as [p, b], [t, d], [k, g], [s, z], [ з], [t tз] is based on the absence or presence of vibrations of the vocal cords, or on the absence or presence of voice or tone component. However, a considerable body of experimental work on physiological and acoustic aspects of these sounds showed that this is not the only difference between them. It is obvious now that there is also energy difference. All voiced consonants are weak (lenis) and all voiceless consonants are strong (fortis). It is worth noticing that now there is a considerable controversy about what phonetic feature is involved in the above-mentioned oppositions. In the intervocalic position, for example, latter – ladder, the voicing difference is important, since it is the distinctive feature of the consonants. In word-initial and final positions the pronunciation of consonants traditionally considered to be voiced may well be voiceless. In these positions it is the energy difference that serves as a differentiating feature. For example, "cap" – "cab", "nor" – "nod", "pick" – "pig". In initial position aspiration would be a more important feature for stops, for example "tick" – "Dick", "cap" – "gap", "pit" – "bit". In a word-final position it is the length of the proceeding vowel that would constitute the chief difference (the vowel of "bead" is longer than that of "beet"). In view of what has just been said it is perfectly obvious that the presence or absence of voice in the above-mentioned oppositions is not a constant distinctive feature. Thus it may be said that the oppositions [p – b], [t – d], [k – g], [f – v], [s– z], [ з], [t tз] are primarily based on energy difference, that is on fortis – lenis articulation, which are their phonologically relevant features. It is for this reason that such characteristics as voiceless – voiced have given place to "fortis" – "lenis" terms. There is one more articulatory characteristic which is usually included into the set of principles on the basis of which the English consonants are classified, that is the position of the soft palate. According to this principle consonants can be oral and nasal. There are relatively few consonantal types in English which require the lowered position of the soft palate. They are the nasal occlusive sonorants [m], [n] and [η]. They differ from oral plosives in that the soft palate is lowered allowing the escape of air into the nasal cavity. It is a well-known fact that no differences of meaning in English can be attributed to the presence or absence of nasalization (there are no two consonants in English which differ in the position of the soft palate). It is for this reason that it cannot be a phonologically relevant feature of English consonants, so it is an indispensable concomitant feature of English nasal consonants. So far we have attempted to show the way the basic articulatory characteristics can be interpreted from the phonological point of view and what classificatory value these characteristics may possess as items of a system. There are, however, other problems of a phonological character. In the English consonantal system it is the problem of affricates, that is their phonological status and their number. It would be true to say that though it is a long-standing problem it is obvious to anyone who is acquainted with the state of current general theory that its importance is not lessened, nor is the analysts' concern for it diminished. The question is: what kind of facts a phonological theory has to explain? 1) Are the English [t tз] sounds monophonemic entities or biphonemic combinations (sequences, clusters)? 2) If they are monophonemic, how many phonemes of the same kind exist in the system of English consonants, or, in other words, can such clusters as [tr, dr], [ts, dz] and [tθ, dð] be considered affricates? To define it is not an easy or obvious matter. If we tried to analyse all the theories concerning the problem, the task would prove daunting. So we shall try to direct our attention to essentials. One thing is clear, that is the above-mentioned sounds are complexes because articulatorily and acoustically we can distinguish two elements. The articulatory difference between [t tз] on the one hand, and [t, d] on the other is based on the speed of releasing the obstruction. When [t tз] are pronounced the released stage is performed slower than in case of [t, d]. But this is not the only difference between an affricate and a plosive. Special instrumental analysis shows that there is no synchrony in releasing the obstruction by the central part of the tongue and its sides. It is the centre of the front part of the tongue that comes first in release stage while the sides of the tongue still form a closure. At the next stage the obstruction is released by the sides of the tongue while the central part of the tip forms a narrowing against the alveolar ridge through which the air escapes. The articulatory movement of the parts of the tongue is smooth and continuous. It is difficult to say where the bordering line between the first and the second stage could pass. Considering phonemic duality of affricates it is necessary to analyze the relation of affricates to other consonant phonemes to be able to define their status in the system of consonants. As you know from the course of practical phonetics, traditionally it is the type of obstruction that serves a basis "of comparison. The two main types of obstruction are complete and incomplete. In accordance with such classification affricates cannot be referred to either of the groups, since they are known to consist of both: the closure and the narrowing. That is why it seems justified to single out a group of affricates, or occlusive-constrictive consonants. Theoretically in each language there might be as many affricates as there are fricatives but in reality the number of them is limited and there are languages where there are none. As was mentioned above, the problem of affricates is a point of considerable controversy among phoneticians. According to Soviet specialists in English phonetics, there are two affricates in English, they are: [t tз]. D.Jones joints out there are six of them: [t tз], [ts, dz] and [tr, dr]. A.C.Gimson increases their number adding two more affricates: [tθ, dð]. We could ask, what might account for such a difference in their opinions? The fact is that Soviet phoneticians look at English affricates through the eyes of a phoneme theory, according to which a phoneme has three aspects: articulatory, acoustic and functional, the latter being the most significant one. As to British phoneticians, their primary concern is the articulatory-acoustic unity of these complexes, because their aim is limited by practical reasons of teaching English. Before looking at these complexes from a functional point of view it is necessary to define their articulatory indivisibility. This procedure is generally carried out according to the rules worked out by N.S.Trubetskoy. According to his point of view a sound complex may be considered nonphonemic if: f) its elements belong to the same syllable; b) it is produced by one articulatory effort; c) its duration should not exceed normal duration of either of its elements. Now let us try to apply these criteria to the above-mentioned sound complexes. жүктеу/скачать 221,88 Kb. Достарыңызбен бөлісу:
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