Signal Processing Toolbox

Current Filter Information Region

This region displays important information about the current filter structure being used by the tool:

• Filter structure indicates which of the following internal representations is being used for the current filter:
• Direct form I
• Direct form II
• Direct form I transposed
• Direct form II transposed
• State-space
• Lattice allpass
• Lattice MA min. phase
• Lattice MA max. phase
• Lattice ARMA
• Source indicates whether the current filter was designed using FDATool (Designed) or imported from another source (Imported). The term "Quantized" appears here if the filter has been quantized using the Filter Design Toolbox.
• Order reports the order of the current filter.
• Stable indicates whether the filter is asymptotically stable (Yes) or unstable (No). Filters that have poles on or outside the unit circle are considered unstable.
• Sections reports the number of sections in the current filter.

The Convert structure button opens a dialog box that allows you to choose a different structure for the internal filter representation.

Design Method Region

Convert Structure Button