Dresden 2014 – wissenschaftliches Programm
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SOE: Fachverband Physik sozio-ökonomischer Systeme
SOE 8: Focus Session: Complex Systems Approaches to Language and Communication
SOE 8.8: Vortrag
Dienstag, 1. April 2014, 12:45–13:00, GÖR 226
A Coarse Grained Approach for Distinguishing Whale "Dialects" — •Sarah Hallerberg1, Heike Vester2, Kurt Hammerschmidt3, and Marc Timme1,4,5 — 1Network Dynamics, Max Planck Institute for Dynamics and Self-Organization (MPIDS) — 2Ocean Sounds, Henningsvaer, Norway — 3Research Group Cognitive Ethology Lab, German Primate Center, Göttingen — 42Faculty of Physics, University of Göttingen, Göttingen, Germany — 5Bernstein Center for Computational Neuroscience, Göttingen, Germany
Complex vocal communication simultaneously requires high cognitive abilities, a large flexibility in sound production, and advanced social interactions. Social whales, such as killer whales and pilot whales, fulfill all of these requirements. How their acoustic signals are used and how the acoustic patterns are organized, however, is largely unknown. Up to date, mostly human observers classify acoustic patterns through hearing and visual comparison of spectrograms. We decided to use a data analysis approach and study distributions of acoustic features (in particular, cepstral coefficients) generated from ensembles of pilot whale vocalizations. Comparing these distributions by computing Kullback-Leibler-divergences we find substantially different distributions for sounds produced by different groups of pilot whales.