Ch. 4 The length of vowel sounds
Short vowel sounds
/I/ /e/ /æ/ /ɒ/ /ʌ/ /ʊ/ /ə/
Long vowel sounds
/i:/ /u:/ /ɔː/ /a:/ /ɜː/
Rule over long vowel sound (before a lenis (voiced) consonant sound)
A long vowel sound before a lenis (voiced) consonant sound at the end of a word or syllable (long context) is the longest vowel sound: (cord, large, loo)
Rule over long vowel sound (in front of a voiceless consonant sound)
A long vowel sound in front of a voiceless consonant sound (short context) is the same as a short vowel sound (in front of a voiced consonant sound) (court, leaf, Bert)
Rule over short vowel sound (in front of a voiced consonant sound)
A short vowel sound in front of a voiced consonant sound (long context), is longer (cab, kid, love).
Rule over short vowel sound (in front of a voiceless consonant sound)
A short vowel sound in front of a voiceless consonant sound (short context) is the shortest vowel sound (cat, kiss, rough).
Long and short vowel sounds
Both have a long version and a short version.
Determination of actual length of a vowel sound
By the place in the word where it occurs.
The exact length of a vowel sound
It depends on the context. A long vowel sound in a short context is the same length as a short vowel in a long context.
Context
The position of a vowel sound, the sounds around it.
Exception vowel sounds
The vowel sound is not lengthened if it is followed by another syllable. (begging, woodland, budding, leaving, loser, starring)
Short vowel sound in long context
club /klʌb/ of /ɒv/ says /sɛz/ wood /wʊd/ ridge /rɪʤ/
Short vowel sound in short context
cup /kʌp/ cough /kɒf/ chess /ʧɛs/ foot /fʊt/ which /wɪʧ/
Long vowel sound in short context
loop /luːp/ half /hɑːf/ worse /wɜːs/ horse /hɔːs/ each /iːʧ/
Long vowel sound in long context
tube /tjuːb/ halve /hɑːv/ furs /fɜːz/ doors /dɔːz/ siege /siːʤ/