In-air passive acoustic source localization in reverberant environments
Lejun Xiao & Tim Collins
University of Birmingham, UK
In-air Passive Acoustic Source Localization in Reverberant Environments
L. Xiao, T. Collins
Methods Used in Passive Source Localization
Steered beamforming based method
Methods based on spectral estimation
Near-field acoustic holographic (NAH) method
State-space approach based on particle filtering (PF)
Time-difference-of-arrival (TDOA) estimation method.
Block Diagram of
TDOA Method
TDOA Method Based on PHAT
and SCOT
Mathematical model of phase transform (PHAT)
TDOA Method Based on PHAT
and SCOT
Mathematical model of smoothed coherence transform (SCOT)
MATLAB
Simulation Results
Simulation Results Comparison between Practical & Estimated Source Localisations
Test Set-up
The Microphone Array Structure
Practical Test Results
Test Results Comparison between Practical & Estimated Passive Source Localisations
Conclusions
Different kinds of passive source localization method were discussed and compared.
Results from MATLAB simulations and practical tests demonstrated the effectiveness of the method in practical applications.
The method is only suitable for single source localization.
