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Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
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A biomimetic coupled circuit based microphone array for sound source localization.

Huping Xu1, Xiangyuan Xu2, Han Jia3

  • 1School of Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China hupingxu@126.com.

The Journal of the Acoustical Society of America
|October 3, 2015
PubMed
Summary
This summary is machine-generated.

An analog circuit mimics fly ears for sound localization. This system uses a miniature microphone array to detect sound direction with minimal computation, ideal for size-limited applications.

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Area of Science:

  • Bio-inspired engineering
  • Acoustic signal processing
  • Analog circuit design

Background:

  • Sound source localization is crucial for many applications.
  • Mimicking biological systems offers novel engineering solutions.
  • The fly Ormia ochracea exhibits unique auditory spatial processing.

Purpose of the Study:

  • To design an analog circuit that replicates the coupled auditory system of Ormia ochracea.
  • To develop a miniature microphone array system for efficient sound source localization.
  • To demonstrate the system's effectiveness in determining sound direction.

Main Methods:

  • Designed an equivalent analog circuit mimicking coupled fly ears.
  • Utilized a compact two-microphone array to capture phase differences.
  • Implemented intensity difference processing for localization.
  • Experimentally validated the directional characteristics of the circuit.

Main Results:

  • The analog circuit successfully processed signals with minimal phase differences into significant intensity differences.
  • The system demonstrated accurate directional characteristics.
  • Sound source localization was achieved with low computational load.
  • Adjustable response sensitivity was achieved via circuit parameters.

Conclusions:

  • The bio-inspired analog circuit provides an effective method for sound source localization.
  • The miniature microphone array system is advantageous for applications with space constraints.
  • This approach offers a computationally efficient solution for directional audio sensing.