Sahara, Sakila, et al. “Analisis Peredaman Noise Pada Sinyal Audio Dengkuran Menggunakan Filter Butterworth Berbasis Python ”. RIGGS: Journal of Artificial Intelligence and Digital Business, vol. 5, no. 2, July 2026, pp. 12907-15, doi:10.31004/riggs.v5i2.11010.