Space-time noise reduction system for use in a vehicle and method of forming same
AssigneeGentex Corporation
InventorsRobert R. Turnbull, Michael A. Bryson
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AssigneeGentex Corporation
InventorsRobert R. Turnbull, Michael A. Bryson
Estimating the term…
A space-time adaptive beamformer for reducing noise in a vehicle that includes two or more microphones. A first weighting network is used for adjusting the signal characteristics of at least one output of the microphones while at least one delay network is also used for delaying the output in time of at least one output of the microphones. A second weighting network then adjusts the signal characteristics of the output of each of the delay networks and at sum adder works to combine the output of the first weighting network and the second weighting network. Finally, an output of the sum adder is combined with an artificial noise free reference signal to provide a low distortion noise reduced output. By generating a desired signal that acts as an artificial noise free signal reference, adequate noise reduction to be obtained without the distortion created due to processing non-linearity.
A space-time adaptive beamformer for reducing noise in a vehicle comprising:
A method for reducing acoustical noise in a vehicle using an adaptive beamformer comprising the steps of:
Dependencies are inferred from the claim text.