... notice that this time the tolerance mask is always touched by the magnitude response This can be traced back to the fact that, for the SFB, the steps of the tolerance mask are much smaller, not ... in the passband and the transition bands As the objective function to be minimised we adopt a particular representation of the group delay [20], while the stopband magnitude specifications of the ... properties are designed and their performances are compared Moreover, the effect of the number of subbands, the oversampling factors, and the length of the prototype filter are also studied Using the...