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

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Abstract

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 bioinspired 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.
Original languageEnglish
Title of host publicationFrom Animals to Animats 14 : 14th International Conference on Simulation of Adaptive Behavior, SAB 2016, Aberystwyth, UK, August 23-26, 2016, Proceedings
EditorsElio Tuci, Alexandros Giagkos, Myra Wilson, John Hallam
PublisherSpringer
Publication dateAug 2016
Pages79-90
ISBN (Print)978-3-319-43487-2
ISBN (Electronic)978-3-319-43488-9
DOIs
Publication statusPublished - Aug 2016
EventThe 14th International Conference on the Simulation of Adaptive Behavior - Aberystwyth University, Aberystwyth, United Kingdom
Duration: 23. Aug 201626. Aug 2016
http://www.sab2016.org

Conference

ConferenceThe 14th International Conference on the Simulation of Adaptive Behavior
LocationAberystwyth University
CountryUnited Kingdom
CityAberystwyth
Period23/08/201626/08/2016
Internet address
SeriesLecture Notes in Computer Science
Volume9825
ISSN0302-9743

Keywords

  • Binaural acoustic tracking
  • correlation learning
  • lizard peripheral auditory system

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