IPA (International Phonetic Alphabet) was established by the International Phonetic Association in 1886 to standardize phonetic symbols across languages and enable accurate communication about pronunciation. It is used extensively by linguists, speech pathologists, and others for in-depth study of pronunciation. The IPA has expanded over time to cover additional sounds and languages, with major revisions occurring in 1900 to include Arabic sounds and 1932 to incorporate additional symbols.