Letter: Vowel perturbation as a function of tongue height.
D000328:Adult; D006801:Humans; D008297:Male; D010507:Periodicity; D010700:Phonetics; D011187:Posture; D014059:Tongue / Q000502:physiology*; D014732:Vibration; D014827:Vocal Cords / Q000502:physiology*