Filter Design Toolbox Release Notes

Known Software and Documentation Problems

This section updates the Filter Design Toolbox 2.1 documentation, reflecting known Filter Design Toolbox 2.1 software or documentation problems.

Switching Between Design and Quantization Modes in FDATool

After you scale a quantized filter, or convert a quantized filter to second-order sections, do not switch between quantized mode and filter design mode in FDATool. Selecting and clearing the Turn quantization on option (to shift between the quantization and design modes) after you have scaled or converted a quantized filter can corrupt the coefficients for your reference filter and your quantized filter.

To recover your reference filter design and quantized filter design if they have been corrupted, either:

• Import the filter from your workspace again
• Use FDATool to repeat the filter design

Help for Filter Transformations in FDATool

Option Transformations in FDATool does not have What's This? help available. Use helpwin functionname for information about the transformation functions or use the Help browser to search the online documentation.

Filter Design Toolbox 2.1 Release Notes

Filter Design Toolbox 2.0 Release Notes