Vowel Phoneme Table for British English (RP) with key words
IPA,  SAMPA, Broad Romic notation shown for the 21 essential sounds for RP English
(Jones was searching for the minimum number of phonemes and did not include the 3 coded in peach below)
  6 checked,  6 unchecked,  5 -6 diphthongs, 4-6 ending in schwa
Chekt - short
Free - long
Difthongs
4 with schwa
ae . {   .æ a: . A . aa ai . aI.ay a.a@ | ai.aI@
at, ax, ask,  cat alms, want, star  5 eye, ice, bite are, care  |  ire, fire
e  . E   .e 3: . ei . eI.ey e . e@ 
edge get, elbow  3 her, girl, urban ace, ape, vein air, care, there, barely
i    . I  . . i i:  . ii    .iy oi  oi  (oy) i:  . i@
it, in, index, ill eel, east, very oil, boy, loyal ear, fear, deer
o turned a Q  o o: turned c  o ao ou  (oa) o  . o@
ox, cot, otter awe, call, cost oh, oat, low for, four, floor, more
u  . W   .u u:  uu ju .(yu) u . .u@
hook, put, book ooze, zulu, zoo you, few, fuse your,  sure
L   ..v .. : turned e.@ au . au au..au@
up, cut, luck,  ago, sofa, unit out, down our, flower, power
The IPA turned e, turned a, and turned c are unavailable in IPA and Latin-1
The peach cells are not included in the Jones/Wijk essential phoneme inventory Most free vowels are long. All checked vowels (vowels which are checked or stopped by a consonant) are short and most free vowels, with the possible exception of schwa are long.  If a vowel occurs at the end of a word, it is by definition a free vowel and does not need to be distinguished from a checked vowel.  It is only when the free vowel is followed by a consonant that it needs to be distinguished from a closely related short vowel.

Checked vowels could be marked with a double consonant.  To does this sometime but inconsistently:  littl (liik),  ill (iil),  itt (iit),  sitt (siit),  ottr(oat),  izz (iizi),  cott (coot) caught. 
Transcription:  little leak, ill eel, it eat, sit seat, otter oat, is easy, cot caught

Clearly if one uses consonant doubling as the marker, then long vowel doubling is redundant. 

To use the table to illustrate your own notation, download Netscape Communicator to edit this table.


Index

Mapping Other Notations onto IPA

-- See: Automated Spelling Converter   Phonetic Translator

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