... 13. Wavelet based feature extraction using a three level decomposition tree (green line- dolphin chirp, red line- dolphin whistle, blue line- motorbike, black line- ping sonar). Advances in ... America, 125(1), 2009 Advances in Sound Localization 170 locate and pursue the trajectory of moving sound sources, particularly dolphins in a river estuary. 4.2.1 Dolphin sounds classification ... 100 150 30 0 500 0,25 0,04 0,22 0,44 0,65 1 ,31 2,18 0,5 0,09 0,44 0,87 1 ,31 2,62 4 ,36 1 0,17 0,87 1,75 2,62 5,24 8, 73 2,5 0,44 2,18 4 ,36 6,54 13, 09 21,815 0,87 4 ,36 8,72 13, 07 26,15 43, 58Angle(º)...