Yusuf, Siti Agrippina Alodia, dan Muhammad Imam Dinata. “Features Extraction on Cleft Lip Speech Signal Using Discrete Wavelet Transformation”. JTIM : Jurnal Teknologi Informasi dan Multimedia 6, no. 2 (Juli 16, 2024): 161–167. Diakses November 12, 2025. https://journal.sekawan-org.id/index.php/jtim/article/view/545.