The barn owl sound localization system is used in a biomimetic sense to develop a sound-localization system for autonomic agents. We have implemented an algorithm mimicking coincidence detection and delay lines in narrow frequency bands as a detection step and across-frequency integration to arrive at a three-dimensional coincidence map from which the position of a sound source may be extracted as a first step of remodeling (Figure). Currently we are extending this system to include ILD tuning, attentional mechanisms and a voice-activity detector.
Luxemburg Science foundation to Tom Goeckel
Original Publications (Originalarbeiten)
Goeckel T, Führ H, Lakemeyer G, Wagner H (2013) Side peak suppression in responses of an across-frequency integration model to stimuli of varying bandwidth as demonstrated analytically and by implementation. J Comput Neurosci. DOI 10.1007/s10827-013-0460-x
Calmes L, Lakemeyer G, Wagner H (2007) Azimuthal sound localization using coincidence of timing across frequency on a robotic platform. J. Acoust. Soc. Am. 121: 2034-2048.
Calmes L, Wagner H, Schiffer S, Lakemeyer G (2007) Combining sound-localization and laser-based object recognition. AAAI Artificial Intelligence) Spring Symposium on Multidisciplinary Collaboration for Socially Assistive Robotics, Stanford University, March 2007.
Schlueter R, Bezrukov I, Wagner H, Ney H (2007) Gammatone features and feature combination for large vocabulary. ICASSP 2007.