A Filterbank Design for Oversampled Filter Banks without Aliasing in the Subbands
نویسنده
چکیده
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 adap-tive ltering, where, with the proposed lter-bank structure, the traditionally required cross-term adaptive lters between adjacent subbands can be omitted. The proposed lterbank consists of at least three channels which are sub-sampled by diierent subsampling ratios.
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