Main Content

Wavelet Packet Tool Features (1-D and 2-D)

Coefficients Coloration

NAT or FRQ is for Natural or Frequency order.

By level or Global is for a coloration made level by level or taking all detail levels.

abs is used to take the absolute values of coefficients.

Node Action

When you select a node in the tree, the selected option is performed. A complete description of options is provided in the following sections.

Node Label

The node labels can be changed using the pop-up menu. For example, the Type option labels the nodes with (a) for approximation and (d) for detail.

Node Action Functionality

The available options in the Node Action menu are

  • Visualize: When you select a node in the wavelet packet tree the corresponding signal appears.

  • Split/Merge: If a terminal node is selected, it is split, growing the wavelet packet tree. Selecting other nodes has the behavior of merging all the nodes below it in the wavelet packet tree.

  • Recons.: When you select a node in the wavelet packet tree, the corresponding reconstructed signal appears.

  • Select On/Off: When On, you can select many nodes in the wavelet packet tree. Then you can reconstruct a synthesized signal from the selected nodes using the Reconstruct button on the main window. Use the Off selection to deselect all the previous selected nodes.

  • Statistics: When you select a node in the wavelet packet tree, the Statistics tool appears using the signal corresponding to the selected node.

  • View Col. Cfs.: When active, this option removes all the colored coefficients displayed, and lets you redraw only the corresponding coefficients by selecting a node in the wavelet packet tree.