Ah yes sorry the filter array (wxy) is a 3d array of shape (2,2,21) initialised to 0 with the wxy[0,0, 21//2]=1 and wxy[1,1,21/2] =1. Which corresponds to a per

Ah yes sorry the filter array (wxy) is a 3d array of shape (2,2,21) initialised to 0 with the wxy[0,0, 21//2]=1 and wxy[1,1,21/2] =1. Which corresponds to a perfect impulse response function and wxy should also be complex (at least in this implementation of the adaptive filter).