Details The I.T.A. originally had 43 symbols, which was expanded to 44, then 45. Each symbol predominantly represented a single English sound (including affricates and diphthongs), but there were complications due to the desire to avoid making the I.T.A. needlessly different from standard English spelling (which would make the transition from the I.T.A. to standard spelling more difficult), and in order to neutrally represent several English pronunciations or dialects. In particular, there was no separate I.T.A. symbol for the English unstressed schwa sound , and schwa was written with the same letters used to write full vowel sounds. There were also several different ways of writing unstressed / and consonants palatalized to , , , by suffixes. Consonants written by double letters or "ck", "tch" etc. sequences in standard spelling were written with multiple symbols in I.T.A.
Details The ITA originally had 43 symbols which was expanded to 44 then 45 Each symbol predominantly represented a single English sound (including affricates and diphthongs) but there were complications due to the desire to avoid making the ITA needlessly different from standard English spelling (which would make the transition from the ITA to standard spelling more difficult) and in order to neutrally represent several English pronunciations or dialects In particular there was no separate ITA symbol for the English unstressed schwa sound  and schwa was written with the same letters used to write full vowel sounds There were also several different ways of writing unstressed / and consonants palatalized to    by suffixes Consonants written by double letters or "ck" "tch" etc sequences in standard spelling were written with multiple symbols in ITA