FIR Filter Designer

Ledin Engineering, Inc.

About this app

The FIR Filter Designer app designs minimal-order finite impulse response (FIR) digital filters based on performance specifications you provide. The application attempts to find the lowest order (smallest) set of FIR filter coefficients that satisfies the given specifications. The generated filter has approximately unity (0 dB) gain in the passband.

The output of the design procedure is a list of double-precision filter coefficients (Text output option) or an implementation of the filter in C/C++, C#, Java or MATLAB/GNU Octave source code. This output is formatted into an email you can send to any recipients.

Complete source code for the Android FIR Filter Designer app is available at https://www.assembla.com/code/firdesign/subversion/nodes.

Thanks to Jake Janovetz for providing a GPL-licensed implementation of the Parks–McClellan algorithm that served as a starting point for this app.

Ratings and reviews

I used this app to design filters for an amateur radio receiver and it works very well.

Nice app but no advanced options and only contain limited options.

free .. check calculus and provides ready implemented solution for many platforms

What’s new

Initial release of FIR Filter Designer