Ramli, Izzad, Nursuriati Jamil, and Noraini Seman. “An Iterated Two-Step Sinusoidal Pitch Contour Formulation for Expressive Speech Synthesis”. Journal of Information and Communication Technology 20, no. 4 (September 27, 2021): 489–510. Accessed May 3, 2024. https://e-journal.uum.edu.my/index.php/jict/article/view/13837.