Automated classification of dolphin echolocation click types from the Gulf of Mexico
Fig 5
Towed hydrophone array click types.
Clustered clicks from towed hydrophone array recorded in the presence of (A) Pantropical spotted dolphin (Stenella attenuata), (B) Atlantic spotted dolphin (Stenella frontalis), (C) Pilot whale (Globicephala sp.), and (D) Risso’s dolphin, (Grampus griseus). B, C and D were recorded in the Atlantic. Left subplots: Mean normalized spectra levels (solid line) with 25th and 75th percentiles (dashed lines); n indicates the number of clicks retained in the final cluster. Center subplots: Concatenated spectra of all clustered clicks. Color indicates normalized received sound pressure level (SPL). Right subplots: Inter-click interval (ICI) distributions.