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

2016; Association for Computing Machinery; Volume: 42; Issue: 4 Linguagem: Inglês

10.1145/2839298

1557-7295

Zdeněk Průša, Peter Søndergaard, Pavel Rajmic,

Seismic Imaging and Inversion Techniques

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.