Fast neuromorphic sound localization for binaural hearing aids

Annu Int Conf IEEE Eng Med Biol Soc. 2013:2013:5275-8. doi: 10.1109/EMBC.2013.6610739.

Abstract

We report on the neuromorphic sound localization circuit which can enhance the perceptual sensation in a hearing aid system. All elements are simple leaky integrate-and-fire neuron circuits with different parameters optimized to suppress the impacts of synaptic circuit noises. The detection range and resolution of the proposed neuromorphic circuit are 500 us and 5 us, respectively. Our results show that, the proposed technique can localize a sound pulse with extremely narrow duration (∼ 1 ms) resulting in real-time response.

MeSH terms

  • Action Potentials / physiology
  • Cochlea / physiology
  • Computer Simulation
  • Hearing Aids*
  • Humans
  • Models, Neurological
  • Neurons / physiology*
  • Silicon
  • Sound
  • Sound Localization / physiology*
  • Synapses / physiology
  • Time Factors

Substances

  • Silicon