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Modulated QMF filter banks with perfect reconstruction

Modulated QMF filter banks with perfect reconstruction

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© The Institution of Electrical Engineers
Published

Necessary and sufficient conditions for perfect reconstruction (PR) in a modulated filter bank are derived. It is shown that, for a bank of M filters of length L, PR can be obtained when L = 2KM, for any positive integer K, whereas previous results guaranteed PR only for K = 1.

Inspec keywords: picture processing; signal processing; filtering and prediction theory; speech analysis and processing

Other keywords: quadrature mirror filter; QMF filter; modulated filter bank; perfect reconstruction; image processing

Subjects: Filters and other networks; Speech and audio signal processing; Signal processing and detection

References

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      • H.S. Malvar , D.H. Staelin . The LOT: transform coding without blocking effects. IEEE Trans. , 4 , 553 - 559
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      • P.P. Vaidyanathan . Quadrature mirror filter banks, M-band extensions, and perfect reconstruction techniques. IEEE ASSP Mag. , 4 - 20
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