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Related Experiment Video

Updated: Oct 29, 2025

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
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Sound source localization using multiple circular microphone arrays based on harmonic analysis.

Xinyu Han1, Ming Wu1, Zerui Han1

  • 1Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China.

The Journal of the Acoustical Society of America
|July 9, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a novel framework for sound source localization using multiple circular arrays in the circular harmonics domain. The method enhances direction-of-arrival estimation accuracy and spatial resolution across various frequencies.

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Area of Science:

  • Acoustics and Signal Processing
  • Array Signal Processing
  • Computational Electromagnetics

Background:

  • Direction-of-arrival (DOA) estimation is crucial for source localization.
  • Conventional methods using single circular arrays face limitations in spatial resolution and frequency response.
  • Modal-based array signal processing can suffer performance degradation due to Bessel function zeros.

Purpose of the Study:

  • To propose a multiple signal classification (MUSIC) framework for DOA estimation using multiple circular arrays.
  • To enhance spatial resolution and overcome frequency-dependent performance issues in sound source localization.
  • To provide a method that avoids inherent problems in modal array signal processing.

Main Methods:

  • Combining multiple circular arrays in the circular harmonics domain.
  • Jointly transforming received signals into sound field coefficients.
  • Applying the MUSIC algorithm to formulated coefficients.
  • Deriving mean square error for sub-array distribution guidance.

Main Results:

  • The proposed method achieves sufficient spatial resolution across different frequencies by optimizing sub-array distribution.
  • Performance degradation caused by Bessel function zeros is effectively mitigated.
  • Numerical simulations and experimental results show superior localization performance compared to existing state-of-the-art methods.

Conclusions:

  • The multi-array circular harmonics MUSIC framework offers improved DOA estimation.
  • Optimized sub-array distribution is key to enhanced performance and overcoming modal processing limitations.
  • This approach represents a significant advancement in acoustic source localization techniques.