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Border recovery for subband processing of finite-length signals. Application to time-varying filter banks

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3 Author(s)
F. Deprez ; CNET, Issy-les-Moulineaux, France ; O. Rioul ; P. Duhamel

In the context of subband processing of finite-length signals using FIR filter banks, a new technique is derived for achieving exact reconstruction when subband signals are truncated to the same number of samples as the original signal. Using a delayed truncation method in the subbands, it is shown that the missing samples can be recovered exactly by inverting small linear systems. Our approach also applies to time-varying filter banks or wavelet transforms where filters are switched between consecutive input blocks

Published in:

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on  (Volume:iii )

Date of Conference:

19-22 Apr 1994