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History of the English
Phonetic Asociation
The evolution of the English Phonetic Association (IPA) has seen numerous changes since its formation in 1887. Major revisions took place in 1900 and 1932, with additional modifications in 1993 and 1994, including the adoption of new letters and extensions.
107 letters represent consonats and vowels:
31 diacritics are use to modify them
19 aditional signs indicate suprasegmentak qualities as length, tone,stress and information.