In this paper we propose a new strategy for the design of real-valued lterbanks which avoids aliasing in the subbands (\inband aliasing") such that applications where two subband signals have to be compared become possible. One example for such an application is subband adaptive ltering, where, with the proposed lterbank structure, the traditionally required crossterm adaptive lters between adjacent subbands can be omitted. The proposed lterbank consists of at least three channels which are subsampled by di erent subsampling ratios.
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