A directional microphone array system generally for hearing aid
applications is disclosed. The system may employ a broadside or an
endfire array of microphones. In either case, the signals generated by
the microphone are added using a plurality of summation points that are
connected together via a single signal wire or channel. In the case of
the endfire array, all but one of the signals is delayed so that the
summation of the signals are in phase. The summation of the signals is
then used to generate an output signal for a speaker of a hearing aid or
the like.