Patent ID: 8014548
Filing Date: 2011-09-06
Classification: H04R

Abstract:
1. A method of operating a hearing instrument, the hearing instrument comprising an in-the-ear-canal component to be worn at least partially in the ear of a user, the method comprising the steps of Obtaining an electrical input signal; Processing, on a signal path, the electrical input signal into an electrical output signal; Converting the electrical output signal into an output acoustic signal and emitting the output acoustic signal into a remaining volume between the in-the-ear-canal component and the user's eardrum; Generating a feed-forward compensation signal by tapping a signal from the signal path, processing the tapped signal into an electrical compensation signal in real time, converting the electrical compensation signal into an acoustic compensation signal and emitting the acoustic compensation signal into a duct between the remaining volume and a surrounding atmosphere; Detecting a duct acoustic signal; and Minimizing the acoustic signal in the duct by using the detected acoustical signal in the duct as error signal and adapting, based on the detected duct acoustic signal, at least one of processing parameters and of a processing structure for said processing the signal into an electrical compensation signal.