Техник ва технологик фанлар со
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аларининг инновацион масалалари. ТДТУ ТФ 2020
357
of a word, becoming voiceless of voiced consonants at the end of a word, reduction of
unstressed vowels, etc.
There are combinatorial changes in sounds. One of these changes is accommodation,
which occurs when consonants and vowels are adjusted next to each other. There are two
types of it: progressive and regressive. In any case, this is a partial adaptation of sounds. In
different ways in different languages and even in one language
at different periods of its
existence, the question of what accommodates: consonants to vowels or vowels to consonants
is resolved.
Assimilation is the process of assimilating sounds of the same kind. It can be complete
or incomplete; progressive or regressive, contact or distant. Assimilation can affect one or
another feature of sound. For vowels, these are signs of a place of articulation,rising,
labialization, and for consonants, it is a way and a place for the formation of tence and lax;
participation - non-participation of the voice (voiceless and voiced). Also, assimilation can be
characterized from all these points of view [3; 43].
Dissimilation is the process of assimilation of sounds of the same type, when two different or
similar sounds are obtained from two identical or similar sounds.
Cases of dissimilation
concern both consonants and vowels; can be contact and distant; progressive and regressive
[8; 48].
Also in the English language, there are positional changes associated primarily with
stress, that is, with the position of the syllable relative to stress.
Stress is the selection of one syllable from a group of syllables.
It is achieved in
different languages by various means, namely: the length of pronunciation - quantitative
(quantitative or longitudinal) stress; strength or intensity of articulation - dynamic (or power,
expiratory) stress; the movement of the voice tone (ascending, descending or combined)
against the background of the neutral tone of other syllables - tone (melodic, musical) stress.
These techniques can be performed both separately and combined with each other.
There are the following types of stress: fixed and non-fixed; single and mixed.
Reduction is a weakening and change in the sound of unstressed syllables and, above
all, the syllable sounds of these syllables. In this regard, it concerns mainly vowel sounds.
Distinguish between quantitative and qualitative reduction. The source of the reduction is
dynamic and dynamically complex stress [1; 46].
However, positional changes are characteristic of consonants.
These are positional
changes of noisy consonants at the end of a word, when the voiced changes to voiceless. This
phenomenon is a consonant reduction.
Assimilation can affect all the articulatory features of a consonant, or only some of
them, i.e. we can talk about assimilation affecting:
• the place of formation of the obstruction or the type of obstruction and the active organ of
speech;
• method of noise production;
• the work of the vocal cords;
• position of the lips [8; 170].
Assimilation, affecting the place of the formation of the obstruction, occurs when the
main (alveolar) variants of the phonemes [t], [d], [n], [l], [s], [z] are changed to minor
(dental), when they
adjacent to dental consonants, for example, tenth, in them, width, read
this, sixth.
Assimilation, affecting the place of formation of the obstruction and the active organ
of speech, is observed in words with the prefix con -: when it is followed by consonant
phonemes [k], [g] the alveolar sonant [n] changes to the backlingual [ŋ], if the prefix is
primary or secondary stress: congress
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