Patent ID: 9591411
Date: 2017-03-07
CPC Classifications: A61N,H04R

Claim:
1. A hearing assistance system comprising a hearing assistance device and an auxiliary device; the hearing assistance device comprising HD-a) a multitude M of input units IU HD-b) a multi-input unit noise reduction system comprising a multi-channel beamformer filtering unit operationally coupled to said multitude of input units IU the system comprising a user interface for activating a calibration mode in the auxiliary device and in the hearing assistance device; the auxiliary device comprising AD-a) an output transducer for converting an electric signal representative of a sound to an acoustic sound signal; AD-b) a control unit for forwarding an electric calibration signal to the output transducer when said calibration mode is activated; wherein the system, during said calibration mode, is configured to estimate a look vector d(k,m) for a target signal originating from a target signal source located at a specific location relative to the user based on the electric calibration signal converted by the output transducer of the auxiliary device to an acoustic calibration sound signal, the estimated look vector d(k,m) being used to determine optimal beamformer weights, and wherein said specific location relative to the user is the location of said output transducer of the auxiliary device, wherein said look vector d(k, m) is an M-dimensional vector comprising elements (i=1, . . . , M), the i