Signal Processing Toolbox

Overview

The Filter Design and Analysis Tool (FDATool) is a powerful user interface for designing and analyzing filters. FDATool enables you to quickly design digital FIR or IIR filters by setting filter performance specifications, by importing filters from your MATLAB workspace, by directly specifying filter coefficients, or by adding, moving or deleting poles and zeros. FDATool also provides tools for analyzing filters, such as magnitude and phase response plots and pole-zero plots. FVTool, which can be launched from FDATool, provides a separate window for analyzing filters. You can use FDATool as a convenient alternative to the command line filter design functions. (FDATool requires resolution of at least 800 by 600.)

Below is a brief introduction to the FDATool that will give you a better understanding of how it can be used.

Note    If you have installed external hardware or targets that interact with FDATool, you may see additional options in FDATool. Refer to the specific hardware or target manual for information on these options. These toolboxes/targets are integrated with FDATool: Filter Design Toolbox                  Filter Design HDL Coder Embedded Target for Texas Instruments C6000 DSP Link for Code Composer Studio Signal Processing Blockset

Filter Design Methods

The tool gives you access to all of the filter design methods in the Signal Processing Toolbox.

Design Method	Function
Butterworth	butter
Chebyshev Type I	cheby1
Chebyshev Type II	cheby2
Elliptic	ellip
Maximally Flat	maxflat
Equiripple	firpm
Least-squares	firls
Constrained least-squares	fircls
Complex equiripple	cfirpm
Bartlett window	bartlett
Bartlett-Hanning window	barthannwin
Blackman window	blackman
Blackman-Harris window	blackmanharris
Bohman window	bohmanwin
Chebyshev window	chebwin
Flat top window	flattopwin
Gaussian window	gausswin
Hamming window	hamming
Hann window	hann
Kaiser window	kaiser
Nuttall (Nuttall's Blackman-Harris) window	nuttallwin
Parzen or de la Vallé-Poussin window	parzenwin
Rectangular window	rectwin
Triangular window	triang
Tukey (tapered cosine) window	tukeywin

You can implement any of the above windows manually using fir1 or fir2. You can also specify a user-defined window by entering its function name and input parameter.

Additional filter design methods are available to users of the Filter Design Toolbox.

FDATool: A Filter Design and Analysis GUI

Using the Filter Design and Analysis Tool

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