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Digital Filter Design Software

This page lists digital filter design software tools for DSP. Tools are categorized as Commercial, Open-Source, Freeware, or Web-Based.

Commercial Filter Design Software

Commercial filter design software tools generally have more capabilities than their open/free counterparts, making them more productive to use.

Program Description / Notes
ScopeFIR By: Iowegian International Corporation (dspGuru's parent company)   For: Windows 

We may be biased, but we think ScopeFIR is the very best FIR filter design program available. ScopeFIR designs FIR filters using the Parks-McClellan method, as well as several other popular FIR filter design methods. Its highly refined, multi-window graphical user interface (including multi-level zooming!) makes it very productive to use. And it provides a large number features to help you fully analyze and customize your filter design.

Best of all, ScopeFIR costs only $199, which also makes it the best value in professional-quality FIR filter design software. If ScopeFIR saves even a few hours of your time (as we believe it will!), it will quickly pay for itself. ScopeFIR has a 60-day free trial period, so we encourage you to try it for yourself by downloading it from the Iowegian web site.
QEDesign By: Momentum Data Systems   For: Windows and Unix
Fiwiz By: Rainer Storn   For: Java


Open Source

"Open Source" is simply software whose source code is publicly available. (See our "OpenDSP" section for additional open and/or free DSP software. Also, if you're looking for filter design "routines" rather than filter design "applications", be sure to see Charles Poynton's Filter Design Software page.)

Program Description / Notes
Meteor By: Weimin Liu    For: Windows

This is the "Meteor" program for constraint-based FIR design by Steiglitz/Parks/Kaiser, wrapped inside a Windows GUI. Pascal and C source code for the Meteor algorithm is provided; code for the GUI isn't.


Freeware

"Freeware" is software which is free of charge, but whose source is not available.

Program Description / Notes
DISPRO Digital filter design and simulation software for DOS.


Web-Based

Here are some filter design applications which can be used interactively from the Internet.

Name By Notes
Interactive Digital Filter Design Tony Fisher Source code is provided.
CSMA Filter Designer University of Westminster Provides few options.

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