Wavelet packets
Wavelets and applications

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TE5215 V1 Article

Wavelet packets


Wavelets and applications

Authors : Béatrice PESQUET-POPESCU, Jean-Christophe PESQUET

Publication date: August 10, 2001, Review date: November 1, 2015 | Lire en français

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3. Wavelet packets

As the signals under study become more complex, it can be interesting to adapt their representation to their time-frequency characteristics. This fact has become relatively quickly apparent to researchers working on wavelets, and in particular on their application to audio. It's worth noting, however, that this adaptability comes at the cost of a significant increase in the complexity of the algorithms employed.

3.1 Filter banks of any structure

As shown in figure 10 , orthogonal (or biorthogonal) wavelet decompositions rely on the iterative use of filter banks always acting...

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