Discrete Wavelet Transforms in the Large Time-Frequency Analysis Toolbox for MATLAB/GNU Octave

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Zdenek Prusa, Peter L. Søndergaard, Pavel Rajmic

Published: 01 Jan 2016, Last Modified: 24 Oct 2024ACM Trans. Math. Softw. 2016EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: The discrete wavelet transform module is a recent addition to the Large Time-Frequency Analysis Toolbox (LTFAT). It provides implementations of various generalizations of Mallat's well-known algorithm (iterated filterbank) such that completely general filterbank trees, dual-tree complex wavelet transforms, and wavelet packets can be computed. The resulting transforms can be equivalently represented as filterbanks and analyzed as filterbank frames using fast algorithms.