US Patent 9980042 Beamformer direction of arrival and orientation analysis system

A beamforming apparatus may have a domain conversion stage converting a plurality of time domain signals representing audio information to a plurality of frequency domain signals representing said audio information, a bandpass filter stage having a plurality of inputs connected to the frequency domain signals and having a plurality of outputs. A beamformer filter stage may have a plurality of inputs corresponding to the of outputs of the bandpass filter stage and a plurality of outputs. An inverse domain conversion stage, converting a plurality of inputs corresponding to outputs of the beamformer filter stage from frequency domain signals to time domain signals and having a plurality of outputs connected to an output stage.