... feature extraction using a three level decomposition tree (green linedolphin chirp, red line- dolphin whistle, blue line- motorbike, black line- ping sonar) 174 Advances in Sound Localization considered, ... ±0 .5 Angle(º) Distance (m) 0, 25 0 ,5 2 ,5 10 10 0,04 0,09 0,17 0,44 0,87 1,74 50 0,22 0,44 0,87 2,18 4,36 8,68 100 150 300 50 0 0,44 0, 65 1,31 2,18 0,87 1,31 2,62 4,36 1, 75 2,62 5, 24 8,73 4,36 6 ,54 ... Dolphin whistles, also called signature sounds, appear to be an identification sound since they are unique for each dolphin The frequency range of these sounds is mainly contained in the interval...