Open Filter Design and Analysis Tool
fdatool opens the Filter
Design and Analysis Tool (FDATool). Use this tool to:
Quantize filters (with DSP System Toolbox™ software installed)
Modify existing filter designs
Create multirate filters (with DSP System Toolbox software installed)
Realize Simulink® models of quantized, direct-form, FIR filters (with DSP System Toolbox software installed)
Perform digital frequency transformations of filters (with DSP System Toolbox software installed)
Refer to Use FDATool with DSP System Toolbox Software for more information about using the analysis, design, and quantization features of FDATool. For general information about using FDATool, refer to Using FDATool.
When you open FDATool and you have DSP System Toolbox software installed, FDATool incorporates features that are added by DSP System Toolbox software. With DSP System Toolbox software installed, FDATool lets you design and analyze quantized filters, as well as convert quantized filters to various filter structures, transform filters, design multirate filters, and realize models of filters.
Use the buttons on the sidebar to configure the design area to use various tools in FDATool.
Set Quantization Parameters — provides access to the properties of the quantizers that compose a quantized filter. When you click Set Quantization Parameters, you see FDATool displaying the quantization options at the bottom of the dialog box (the design area), as shown in the figure.
Transform Filter — clicking this button opens the Frequency Transformations pane so you can use digital frequency transformations to change the magnitude response of your filter.
Create a multirate filter — clicking this button switches FDATool to multirate filter design mode so you can design interpolators, decimators, and fractional rate change filters.
Realize Model — starting from your quantized, direct-form, FIR filter, clicking this button creates a Simulink model of your filter structure in new model window.
Other options in the menu bar let you convert the filter structure to a new structure, change the order of second-order sections in a filter, or change the scaling applied to the filter, among many possibilities.