Vowels.
Sounds are produced with a relatively free flow of air. They are all
typically voiced. To describe vowel sounds, we consider the way in
which the tongue
influences the shape through which the airflow must pass.
Theterminology for describing vowel sounds in English
(e.g.“highfront”) is usually based on their position in a chart,
chart is a list of the major vowels with examples of familiar words
illustrating some of the variation in spelling that is possible for each
sound.