Efficient Affine Projection Tanh Algorithm for Acoustic Feedback Cancellation

In this paper, a low-complexity implementation of the recently proposed affine projection tanh algorithm in conjunction with a frequency shifting performed on speech segments for acoustic feedback cancellation (AFC) is presented. Dichotomous coordinate descent (DCD) iterations having a variable input parameter are used to reduce its numerical complexity. The simulation results show that the proposed approach can achieve better performance than competing methods for both incoming speech and music signals.