Hamada, Nozomu. “Separation of Multiple Speech Signals by usingTriangular Microphone Array”. ECTI Transactions on Electrical Engineering, Electronics, and Communications 6, no. 1 (January 30, 2008): 15–21. accessed April 8, 2025. https://ph02.tci-thaijo.org/index.php/ECTI-EEC/article/view/171743.