1. A beamsteerer for locating a source of desired non-noise audio, the beamsteerer comprising: an array of sensors, each of said sensors having a signal vector d within one of N sectors in a domain of interest; and a beamformer for receiving and multiplying each said signal vector d by a set of N weight vectors w i in said domain of interest to generate a plurality of beampatterns in said N sectors, each of said beampatterns being characterized by a null having high angular resolution, and detecting said source at a position (θ,φ), of lowest energy in said domain of interest, by selecting a maximum steering index (SI) where S ⁢ ⁢ I = 1  w i H ⁢ d  p , wherein p is a positive real number.