DSP Blockset

Importing a Filter to FDATool.   Place a Digital Filter Design block or the Filter Realization Wizard from the Filter Designs library in a model. Double-click the block to open FDATool. You can import a filter designed outside of FDATool (for instance, at the MATLAB command line using Signal Processing Toolbox or Filter Design Toolbox) as follows:

1. Click the Import Filter button at the lower left-hand side of FDATool

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2. Set the parameters in the import filter panel (shown in Figure , The Import Filter Panel in FDATool,). Note that you can type in a vector of filter coefficients directly or type in the name of a MATLAB workspace variable containing the coefficients.
3. Click the Filter Design button at the lower left-hand side of FDATool to view the filter design panel. Now you can redesign or analyze the imported filter with FDATool.

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The Import Filter Panel in FDATool

Saving an FDATool Filter Design Session

Exporting a Filter from FDATool