English Vowel Articulation and Phonetics
Vowel Articulation: Lip Position and Quantity
Lip Shape and Vowel Length
The position of the lips or shape of the lips can be rounded ( ) or unrounded ( ). Vowel quantity is determined by length: RP 5 long vowels ( ) versus 7 short vowels ( ).
Vowel Length Conditions
- So-called long vowels occur in syllables closed by a voiceless consonant ( ), where they become shorter or halflong (pre-fortis clipping).
- Vowels can be checked or free depending on their phonological distribution.
- Short vowels ( ) are checked because they cannot occur in final stressed syllables.
- Long vowels and diphthongs have no such restriction and are labeled free. The short vowel ( ) falls into this class.
Pure Vowels: Stress and Contrast
Stressed vs. Unstressed Vowels
Pure vowels...