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Wavelet packets with uniform time-frequency localization. (English) Zbl 1015.42026
Summary: We construct basic wavelet packets with uniformly bounded localization in both time and frequency. The corresponding orthonormal bases of wavelet packets are parametrized by dyadic segmentations obeying a local variation condition.

MSC:
42C40 Nontrigonometric harmonic analysis involving wavelets and other special systems
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