On the Use of a Modiied Fast Aane Projection Algorithm in Subbands for Acoustic Echo Cancelation

The fast aane projection (FAP) has been proposed recently as a new adaptive ltering algorithm which possesses LMS like complexity but may achieve RLS like convergence. In this work, we investigate the use of FAP algorithms in subbands for acoustic echo cancela-tion (AEC). To this end, some modiications are rst made on the FAP based on the consideration of the numerical stability. The modiied FAP algorithm is then used in a complex adaptive subband lter structure for AEC. Advantages of the resulting subband FAP over the full-band NLMS scheme in terms of both complexity and performance are demonstrated by simulations.