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The design of arbitrary-length cosine-modulated filter banks and wavelets, satisfying perfect reconstruction

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2 Author(s)
T. Q. Nguyen ; Lincoln Lab., MIT, Lexington, MA, USA ; R. D. Koilpillai

FIR filter banks which satisfy the perfect-reconstruction (PR) property can be obtained by cosine modulation of a linear-phase prototype filter of length N=2mM, where M is the number of channels. A PR cosine-modulated filter bank is presented for which the length of the prototype filter is arbitrary. Additional regularity conditions are imposed on the filter bank to obtain the cosine-modulated orthonormal bases of compactly supported wavelets. Design examples are given

Published in:

Time-Frequency and Time-Scale Analysis, 1992., Proceedings of the IEEE-SP International Symposium

Date of Conference:

4-6 Oct 1992