An Adaptive Neural Mechanism with a Lizard Ear Model for Binaural Acoustic Tracking

  • Danish ShaikhEmail author
  • Poramate Manoonpong
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9825)


Acoustic tracking of a moving sound source is relevant in many domains including robotic phonotaxis and human-robot interaction. Typical approaches rely on processing time-difference-of-arrival cues obtained via multi-microphone arrays with Kalman or particle filters, or other computationally expensive algorithms. We present a novel bio-inspired solution to acoustic tracking that uses only two microphones. The system is based on a neural mechanism coupled with a model of the peripheral auditory system of lizards. The peripheral auditory model provides sound direction information which the neural mechanism uses to learn the target’s velocity via fast correlation-based unsupervised learning. Simulation results for tracking a pure tone acoustic target moving along a semi-circular trajectory validate our approach. Three different angular velocities in three separate trials were employed for the validation. A comparison with a Braitenberg vehicle-like steering strategy shows the improved performance of our learning-based approach.


Binaural acoustic tracking Correlation learning Lizard peripheral auditory system 


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Embodied AI and Neurorobotics Lab, Centre for BioRoboticsMaersk Mc-Kinney Moeller Institute, University of Southern DenmarkOdense MDenmark

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