Adaptive beamforming

An adaptive beamforming method configured to process at least two input signals to provide an output signal, wherein a first input signal of the at least two input signals includes a desired signal as a main component and a second input signal of the at least two input signals includes an undesired signal as a main component;

• the method carried out by a processor having a non-transitory computer-readable storage medium capable of executing instructions, the method comprising the steps of:
• adaptive error processing the second input signal and at least one of the first input signal and the output signal to provide an estimated undesired signal representative of an estimate of undesired signal components included in the first input signal;
• and
• taking a difference between the estimated undesired signal and the first input signal to provide the output signal.

A non-transitory computer-readable storage medium comprising instructions which, when executed by a computer, performs an operation for adaptive beamforming configured to process at least two input signals to provide an output signal, the first input signal of the at least two input signals includes a desired signal as a main component and a second input signal of the at least two input signals includes an undesired signal as a main component, the operation comprising:

• adaptive error processing the second input signal and at least one of the first input signal and the output signal to provide an estimated undesired signal representative of an estimate of undesired signal components included in the first input signal;
• taking a difference between the estimated undesired signal and the first input signal to provide the output signal;
• beamforming processing two or more microphone signals to provide one or more beam signals;
• and
• beamsteering processing the one or more beam signals, wherein processing the one or more beam signals comprises detecting the desired signal and the undesired signal from the one or more beam signals, the desired signal representing a beam of sound wave pointing towards a desired source, and the undesired signal representing a beam of sound wave pointing towards a noise source.