HEARING AID WITH FEEDBACK CANCELLATION

摘要

The present invention relates to a hearing aid, which is capable of compensating for the internal mechanica and/or acoustical feedback within the hearing aid housing. The internal compensations effectively compensates for the mechanical and/or acoustical signals generated within the hearing aid and picked up by the one or more microphones of the hearing aid. The hearing aid comprises a microphone for converting sound into an audio signal, first feedback compensation means for providing a first feedback compensation signal of signals picked up by the microphone by modelling an internal mechanical feedback signal path of the hearing aid, subtracting means for subtracting the first and second feedback compensation signals from the audio signal to form a compensated audio signal, processing means, connected to an audio signal to form a compensated audio signal, processing means, connected to an output of the subtracting means, for processing the compensated audio signal, and a receiver, connected to an output of the processing means, for converting the processed compensated audio signal into a sound signal. In a preferred embodiment of the invention, the hearing aid further comprises second feedback compensation means for providing a second feedback compensation signal by modelling an external feedback signal path of the hearing aid.