Liu, Yadong, Pramit Saha, Arian Shamei, Bryan Gick, and Sidney Fels. “Mapping a Continuous Vowel Space to Hand Gestures”. Canadian Acoustics 48, no. 1 (March 17, 2020). Accessed June 2, 2020. //jcaa.caa-aca.ca/index.php/jcaa/article/view/3373.