10 August 2014

Diphthongs and triphthongs

Diphthongs
Diphthong is a sound that consists of a movement from one vowel to another, there are 8 diphthongs in English. First part of diphthong is longer than the second part. For example in a word "eye" there is a diphthong aɪ and only the last quarter of the diphthong does the ɪ glide to become noticeable. As the glide to ɪ happens, the loudness of the word decreases. Therefore, foreign speakers should remember not to make the last part of diphthong too strongly.
Closing diphthongs  are gliding ones and end with a closed vowel ɪ/ʊ. The first element is longer and very easier recognised, whereas the second´s shorter and terminates the whole diphthong.
eɪ (mate)   aɪ (buy)    ɔɪ (boy)    əʊ (no)    aʊ (now)
Centring diphthongs  end with a central vowel schwa

ɪə (beard)    eə (bear)   ʊə (tour, nowadays pronounced as a monophone ɔː)


Triphthongs
They are composed of closing diphthong and schwa pronounced in only very slow and accurate speech. Triphthongs are the most complex English sounds of the vowel type. They might be difficult to pronounce and to recognise. It is basically a glide from one vowel to another one and then to third. All are produced rapidly and without interruption. The main problem for foreign speakers today is that in present-day English the extent of the vowel movement is very small, except in very careful pronunciation.

eɪə (layer)    aɪə (liar)    ɔɪə (lawyer)    əʊə (lower)    aʊə (power)

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