An oversampled subband adaptive filter without cross adaptive filters

Recently a new real-valued oversampled filter ba.nk has be:cm proposed which reduces the “inband” alias. The filterba.nk consists of at least three rhannels whirh are subsa.mpled by different subsampling ratios. Tn this paper we investigate into the applicability of t.his filterbank for adaptive subband filtering a.nd compa.rc the setup with existing subband and fullba.nd techniques. input signal and the subband desired signal cannot, be compared dirertly a.s information is lost. Efforts to redure this “inba.nd” a.liasing 1la.s been made [fj] where the analysis a.nd synthesis filt,ers were ranst.ructc!d from Illi filtrrs with a very narrow trarisition band and a high stopband att.cnuation. ‘l‘hcse ILK filter banks however show a poor performance in terms of signal-to-noise ratio in the reconstrurted signal.