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Phonological and non-phonological features in the system of english vowels (11)

Substitution gives us a useful tool for establishing contrastive units, phonemes. The basic method of establishing a phoneme inventory is finding a minimal pair of words which form contrast in one segment only, like hot/cot. Similarly, in word sets like heed, hid, head, had, etc, any 2 words can form a minimal pair in which there’s contrast in respect of one vowel segment only.

There’re 20 vowel sounds which have a distinctive function in RP. Here are the words illustrating the contrasts established by replacing one vowel for the other (this will give us 17 phonemes):

Features which distinguish the vowel sounds in the minimal pairs

The basic classifying features of English vowels are quality, length, position of the lips, among which quality is the only phonemic one as a change in quality creates contrast and serves to distinguish words and their forms

  1. Vowel quality which depends on the height and the front-back position of the tongue.

According to the vertical position of the tongue, vowels can be:

a) close (high):

b) mid:

c) open (low)

According to the horizontal position of the tongue, they are classified into:

  1. front [i:], [e], [ei], [æ],[εə]

  2. central [], [3:], [ə ], [3u], [εu]

  3. back [o], [o:], [u:], [a:]