Français
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...
The Ultimate Scientific and Technical Reference
This article is included in
Signal processing and its applications
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Wavelet packets
Wavelet frames
References
Software
Numerous software packages now exist, making it easy to implement a wavelet transformation. Most of these products are integrated into larger software packages (MATLAB, Mathematica...) designed for numerical or symbolic calculation. What's more, these programs are generally available on different systems (Unix/Linux, Windows, Macintosh).
Commercial software includes the Wavelet Toolbox, a MATLAB toolbox...
The Ultimate Scientific and Technical Reference
