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This paper introduces characterization of over-sampled linear phase perfect reconstruction filter bank as an embedded part of corresponding critically sampled filter bank. We deal with FIR linear phase perfect reconstruction filter banks with real-valued coefficients in which all analysis filters have the same length. Two methods are presented for designing such filter banks with integer oversampling...
Approximately linear phase FIR filters with reduced group delays are desirable in certain applications. Conventional design methods indirectly achieve the desired group delay by approximating the complex frequency response, resulting in large group delay error, especially at the vicinity of the band edge. A new design method based on semidefinite programming is proposed. An explicit expression for...
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