This document discusses vowel sounds and their phonetic representations. It provides examples of long and short vowel spellings in English words and identifies the vowel sounds used in 20 example words. The International Phonetic Alphabet was created by the International Phonetic Association in the late 19th century to provide a standardized system for representing sounds in oral languages. A vowel diagram arranges vowels based on the position of the tongue and lips used to produce each sound.