Retrieving "Lip Configuration" from the archives

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1. Vowel

   Linked via "lip configuration"

   A vowel is a speech sound produced with an open vocal tract (or vocal tract), where there is no significant obstruction to the flow of air from the lungs past the glottis and out of the mouth or nose. In phonetics, vowels are primarily classified based on three articulatory parameters: tongue height (or aperture), tongue backness (or [advancement](/entries/advancem…