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On reconstruction methods for processing finite-length signals with paraunitary filter banks

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2 Author(s)
de Queiroz, R.L. ; Dept. of Electr. Eng., Texas Univ., Arlington, TX, USA ; Rao, K.R.

New expressions are developed for the perfect reconstruction of the boundary regions of a finite-length signal after subband processing. The time-invariant filter bank is required to be uniform and paraunitary, using FIR filters regardless of phase or symmetry. They accommodate a linear boundary extension in the analysis section, and avoid periodic extensions or storage of extended subband signals. The reconstruction methods are based on the formulation of linear systems that are built as a function of the filters

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Signal Processing, IEEE Transactions on  (Volume:43 ,  Issue: 10 )