Using the international phonetic alphabet, it is possible to record any of the sounds of all of the known languages using approximately how many sound symbols?

The International Phonetic Alphabet is an alphabetic system of phonetic notation based primarily on the Latin alphabet. It was devised by the International Phonetic Association in the late 19th century as a standardized representation of the sounds of spoken language. The IPA is used by lexicographers, foreign language students and teachers, linguists, speech-language pathologists, singers, actors, constructed language creators and translators.

The answer isharmonia which was written by rythem.