Active occlusion cancellation
Abstract:
A hearing device includes: a microphone for providing an audio signal; a signal processor for generating a processed audio signal; a first subtractor having a first input for receiving the processed audio signal, a second input, and an output for providing a first combined audio signal; a receiver for converting the first combined audio signal into an output sound signal; an ear canal microphone configured to provide an ear canal audio signal; a second subtractor having a first input for receiving the ear canal audio signal, a second input, and an output for providing a second combined audio signal; a first filter for receiving the second combined audio signal and for providing a filtered second combined audio signal to the second input of the first subtractor; and a second filter for providing a filtered processed audio signal to the second input of the second subtractor.
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