Evaluation of State-of-the-Art Acoustic Feedback Cancellation Systems for Hearing Aids

In this work we evaluate four state-of-the-art acoustic feedback cancellation systems for hearing aid applications. We show that significant improvements in cancellation performance can be made over traditional systems by allowing small alterations in the loudspeaker signal and a computational complexity increase by a factor of 2 − 3. The evaluation is based on a listening test and objective assessments of simulation results.