1. A computer-implemented process for improving the signal to noise ratio of one or more signals from sensors of a sensor array, comprising: inputting signals of sensors of a sensor array in the frequency domain defined by frequency bins; for each frequency bin, computing a beamformer output as a function of weights for each sensor, wherein the weights are computed using combined noise from reflected paths and auxiliary sources, and a sensor array response which includes the intrinsic gain of each sensor as well as its directional propagation loss from the source to the sensor; combining the beamformer outputs for each frequency bin to produce an output signal with an increased signal to noise ratio over what would be obtainable directional gain of each sensor and its directional propagation loss into account.