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Preparing to Add a New Wavelet Family

The Wavelet Toolbox contains a lot of wavelet families, but by using the wavemngr function, you can add new wavelets to the existing ones to implement your favorite wavelet or try out one of your own design. The toolbox allows you to define new wavelets for use with both the command line functions and the graphical interface tools.

Caution This capability must be used carefully, because the toolbox does not check that your wavelet meets all the mathematical requisites.

The wavemngr function affords extensive wavelet management. However, this chapter focuses only on the addition of a wavelet family. For more complete information, see the wavemngr entry in the Reference Guide.

The wavemngr command permits you to add new wavelets and wavelet families to the predefined ones. However, before you can use the wavemngr command to add a new wavelet, you must

  1. Choose the full name of the wavelet family (fn).
  2. Choose the short name of the wavelet family (fsn).
  3. Determine the wavelet type (wt).
  4. Define the orders of wavelets within the given family (nums).
  5. Build a MAT-file or a M-file (file).
  6. For wavelets without FIR filters: Define the effective support.

These steps are described below.


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