MVDR beamformer analysis of acoustic vector sensor with single directional interference

The minimum variance distortionless response beamformer (MVDR) using the direction-of-arrival (DOA) of the source signal as the steering vector for an acoustic vector sensor (AVS) s proposed. The interference reduction performance of the MVDR beamformer under a scenario of one directional interference and different sensor noises is analyzed. The output signal-to-noise ratio (oSNR) and array gain of a single AVS are presented. The theoretical upper and lower bounds of oSNR and array gain for an AVS under the scenario of one directional interference and background noise are given. Simulations are provided to support the analysis.

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