Patent ID: 8437487

Claim:
A method for adaptively suppressing acoustic feedback in a hearing device, the method comprising: receiving an acoustic input signal comprising ambient sounds from the environment and acoustic feedback of an acoustic output signal; converting the acoustic input signalinto a microphone signal; combining the microphone signal with an estimated feedback signal, thereby generating an unprocessed signal; processing the unprocessed signal, thereby generating a processed signal; converting the processed signal into the acoustic output signal; radiating the acoustic output signal into a user's ear canal; applying a first transfer function to the processed signal, thereby generating the estimated feedback signal; applying a second transfer function to the unprocessed signal, thereby generating a main error signal; and modifying the first transfer function in dependence on the main error signal; characterised in that the method further comprises: estimating relative amounts of high- and low-frequency signal content in at least one of the microphone signal and the unprocessed signal; and modifying the second transfer function in dependence on the estimated relative amounts.