Biologically inspired beamforming with small acoustic arrays

Douglas L. Jones, Michael E. Lockwood, Albert S. Feng, Bruce C. Wheeler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Many biological hearing systems perform much better than existing signal processing systems in natural settings. Two biologically inspired adaptive beamformers, one mimicking the mammalian dual-delay-line localization system, show SNR gains in challenging cocktail-party scenes substantially exceeding those of conventional adaptive beamformers. A "zero-aperture" acoustic vector sensor array inspired by the parasitoid fly Ormia ochracea and accompanying algorithms show even better performance in source recovery than the binaural beamformers, as well as the ability to localize multiple nonstationary sources to within two degrees. New experimental studies of the performance of the biologically inspired beamformers in reverberation show substantial reduction in performance in reverberant conditions that hardly affect human performance, thus indicating that the biologically inspired algorithms are still incomplete.

Original languageEnglish (US)
Title of host publicationBIOSIGNALS 2008 - Proceedings of the 1st International Conference on Bio-inspired Systems and Signal Processing
Pages128-135
Number of pages8
StatePublished - 2008
EventBIOSIGNALS 2008 - 1st International Conference on Bio-inspired Systems and Signal Processing - Funchal, Madeira, Portugal
Duration: Jan 28 2008Jan 31 2008

Publication series

NameBIOSIGNALS 2008 - Proceedings of the 1st International Conference on Bio-inspired Systems and Signal Processing
Volume2

Other

OtherBIOSIGNALS 2008 - 1st International Conference on Bio-inspired Systems and Signal Processing
Country/TerritoryPortugal
CityFunchal, Madeira
Period1/28/081/31/08

Keywords

  • Beamforming
  • Biologically inspired beamformers
  • Cocktail party
  • Hearing aids

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Control and Systems Engineering

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