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12)The principal theories of syllable formation and syllable division.

To explain the mechanism of syllabic formation several theories have been produced.

1)The most ancient theory states that there are as many syllables as there are vowels. But it doesn’t take into consideration that consonants can also form syllables.

2) The expiratory theory- as many syllables as there are expiratory pulses. It is inconsistent because it is possible to pronounce several syllables in exhalation.

3) A more popular theory- the relative sonority theory. Here the term sonority has another meaning. It is the carrying power of the sounds, their perceptibility. Although they are heard by the same normal pitch and force of utterance, they have different physical properties. Prof O. Jespersen proved that there are different degrees of sonority and established the scale of prominence: 1. Low v /a:, o:, o/; 2. Mid v /e, ^/; 3. High v /i:, I, u:, u/; 4. Semi-v /w,j/; 5. Sonorants /l, r, m, n, ng/; 6. Voiced constrictive cons /v, z, 3/; 7. Voiced plosive cons /b, d, g/; 8. Voiceless constrictive cons /d3, f, sh/; 9. Voiceless plosive cons /p, t, k/. The most sonorous are back vowels, then semi-v and sonorants, then voiced and voiceless cons. Sounds are grouped around the most sonorous tones- they form the peak of sonority in a syllable. Disadvantages: the theory fails to explain the mechanism of syllabic division, it does not state to which syll the weak sound of the boundary belongs.

4) L.V. Shcherba applied the muscular tension theory and the three types of consonants theory. He explained the phenomenon of syllable formation by muscular tension impulses. Each impulse has its strongest point/the peak of prominence and its weakest point/ the valley of prominence. Valleys of prominence correspond to the points of syllabic division. Types of consonants: 1. Initially strong (it, oath, add). The beginning of a cons is more energetic while the end is weaker. The more energetic part of a cons is attached to a vowel so that initially strong cons occur in the end of a closed syll, followed by short vowels. 2. Finally strong (may, tea, new). The beginning of a cons is weak, the end- is more energetic, occur at the beginning of a syll, followed by long vowels. 3. Geminate/double (midday, what time). A cons is pronounced in such a way that both the beginning and the end are energetic with a weakening of a muscular tension in the middle. Acoustically give the impression of 2 cons.

5) “Loudness theory” by N.I. Zhinkin. He stated that syllables are to a rise and fall of loudness. Loudness is regulated in the lower part of pharynx with the help of the epiglottis. Zhinkin asserts that every phoneme possesses specific inherent loudness, which manifests itself when the sounds are pronounces in sequences. Syllables are due to “curves of loudness”. Syllabic phoneme possesses greater inherent loudness. Loudness depends on the amplitude of sound waves. It should be mixed with inherent sonority, which depends on the degree of noise and muscular sound in phoneme.

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