Abstract: Method of noise reduction in a hearing aid or a listening device to be used by a hearing impaired person in which the noise reduction is provided primarily in the frequency range wherein the hearing impaired has the smallest hearing loss or the best hearing.

Abstract: The invention relates to a microphone unit for use in connection with a communication device, where the microphone unit comprise:—a linear array of two or more microphones (A,B,C,D,);—a signal processing unit which receives the signals from a number of the microphones in the array and which through signal processing provides an output signal with a degree of direction-ality, output means for the signal resulting from the signal processing. According to the invention the microphones (A,B,C,D) are directional microphones of the dipole type mounted with the ports of the dipole pointing in the direction of the linear array thereby enlarging the port spacing of the microphones (A,B,C,D).