Pengembangan Sistem Pendeteksi Gelombang Awal, Magnitude, Kedalaman, dan Lokasi Sumber Gempa Bumi Secara Real-time Menggunakan Algoritma STA/LTA dan Multi-target Regression = Development of a Real-time Initial Wave, Magnitude, Depth, and Location of Earthquake Sources Detection System using STA/LTA Algorithm and Multi-target Regression