Direction-of-arrival estimation algorithms using single acoustic vector-sensor

Direction-of-arrival (DoA) estimation of an acoustic source has numerous applications ranging from defence to entertainment industry. The DoA of an acoustic source can be estimated either by using microphone array processing which has large aperture size, or it can be obtained using acoustic particle velocity which is measured using a compact device called acoustic vector sensor. We have studied the performance of different algorithms, viz., Bartlett Beamforming, Capons Beamforming, eigenvector and Acoustic intensity vector for DoA estimation of single source and multiple sources using an L-shaped AVS. The L-shaped AVS comprises of three homogeneous sensors i.e. omni-directional microphones with an aperture of 14.14 mm. The COMSOL-Multiphysics, a Finite element method tool, has been used to generate the experimental environment for the signal recording of an L-shaped AVS.

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