Signal processing may include determining a first component common to a first input signal and a second input signal and extracting the first component from at least one of the first input signal or the second input signal, a second component from the first input signal, and a second component from the second input signal. The second component of the first input signal may be different from the second component of the second input signal. An operation may be performed using the extracted, second components. The first component may be combined with a result of the operation.