The essence of fracture is that the front vowels are partially assimilated to the following hard consonant by forming a glide, which combines with the vowel to form a diphthong
The essence of fracture is that the front vowels are partially assimilated to the following hard consonant by forming a glide, which combines with the vowel to form a diphthong.
Mutation is the change of one vowel to another through the influence of a vowel in the succeeding syllable (последующий слог).
It was of three types:
1) i-mutation (palatal mutation)
2) back mutation
3) mutation before h
I-MUTATION
The most important type of mutation is that caused by an i (j) of the following syllable. Let’s study the mechanism of i-mutation, taking the change fullian>fyllan ‘fill’ as an example. The vowel u is articulated by raising the back of the tongue together with rounding the lips. The sound i requires raising the front of the tongue.
I-MUTATION
When the speaker begins to articulate the u, he at the same time anticipates (предвидеть)the articulation needed for i and raises the front of the tongue instead of its back. The lip-rounding is preserved. The result is the vowel y.
BACK MUTATION
Another type of mutation was caused by a back vowel (a, o, u) of the following syllable. The essence of it is the following. The articulation of the back vowel is anticipated in the preceding front vowel, which accordingly develops into a diphthong.
