Patent ID: 11968499
Assignee: WIDEX A/S
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method of operating a hearing aid comprising a first microphone, a second microphone, a digital signal processor, a combiner, a minimum phase filter and an electrical-acoustical output receiver, the method comprising the steps of:
providing a first signal by adding a first and a second microphone signal provided from the first and the second microphones respectively;
providing a second signal that is different from the first signal by combining a third and a fourth microphone signal provided from the first and the second microphones respectively;
using the digital signal processor to provide an intermediate beamformed signal by linearly combining said first and second signals using an adaptive parameter to weight said first and second signals;
using the digital signal processor to determine a target gain adapted to provide at least one of: alleviating a hearing deficit of a user, suppressing noise and customizing the sound to at least one of a user preference and a sound environment;
using the digital signal processor to determine a resulting hearing aid gain to be applied to the intermediate beamformed signal based on the target gain and based on the value of the adaptive parameter;
using the digital signal processor to synthesize the minimum phase filter to apply said resulting hearing aid gain to said intermediate beamformed signal in order to provide a hearing aid output signal as input to the electrical-acoustical output receiver.