Patent ID: 9635473
Date: 2017-04-25
CPC Classifications: H04R

Claim:
1. A hearing device comprising a microphone array for picking up sound from a sound field including a target sound source in the environment of the hearing device, the microphone array comprising a number M of microphones for picking up each their version of the sound field around the hearing device and providing M electric input signals, a look vector d(k) being defined as an M-dimensional vector comprising elements d a look vector estimation unit for providing an estimate d a generalized sidelobe canceller for providing an estimate e(k,n) of a target signal s(k,n) from said target sound source, where n is a time index, a target direction being defined from the hearing device to the target sound source, the generalized sidelobe canceller comprising an all-pass beamformer configured to leave all signal components of the M electric input signals from all directions un-attenuated, and providing all-pass signal y a target-cancelling beamformer configured to maximally attenuate signal components of the M electric input signals from the target direction, and providing target-cancelled signal y a scaling unit for generating a scaling vector h(k,n) applied to the target-cancelled signal y a combination unit for subtracting said scaled, target-cancelled signal y wherein the M electric input signals from the microphone array and the look vector estimation unit are operationally connected to the generalized sidelobe canceller to provide that the generalized sidelobe canceller processes the M electric input signals from the microphone array and provides said estimate of the target signal s from the target sound source represented in the M electric input signals based on said M electric input signals and said estimate d the scaling unit is configured to provide that said scaling vector h(k,n) is made dependent on a difference Δ