Rounding
Swedish contrasts three high front vowels in rounding:
- [i] unrounded
- [y] rounding type 1 (protusion)
- [] rounding type 2 (vertical compression)
(after Fant, 1975) What is rounding?
Contact on sides between upper and lower lips
Length of side contact in rounded and unrounded vowels:
Advanced Tongue Root (ATR)