HEARING AID SYSTEM INCLUDING AT LEAST ONE HEARING AID INSTRUMENT WORN ON A USER'S HEAD AND METHOD FOR OPERATING SUCH A HEARING AID SYSTEM

摘要

A hearing aid system for assisting a user's ability to hear includes at least one hearing aid instrument worn on the user's head. A sound signal from the surroundings is recorded and converted into input audio signals by input transducers of the hearing aid system. The hearing aid system includes two adaptive beamformers with variable notch direction, applied indirectly or directly to the input audio signals to generate direction-dependently damped audio signals. The notch directions are set to mutually different values to minimize the energy content of the direction-dependently damped audio signal of each beamformer. The notch directions of the two beamformers are evaluated in comparative fashion. A user's head rotation is captured qualitatively and/or quantitatively if a correlated change in the notch directions is determined within the scope of the comparative evaluation. A method for operating the hearing aid system is also provided.