An open-source tool for the design of optimized multiplierless FPGA implementations of LTI filters. This tool:

  • is based on a hardware implementation cost model developed by Martin Kumm in [Kumm, 2016];
  • generalizes the filter design & implementation problem into an Integer Linear Programming one;
  • provides fast solutions (benchmarking is in progress);
  • supports features such as flexible gain and sparse implementations


An open-source  end-to-end code generator for digital filters.

This tool combines numerous features, such as

  • support of classic structures, e.g. Direct Forms, State-Space, Lattice Wave Digital Filters
  • support of Matlab Simulink linear data-flow graphs
  • reliable Fixed-Point Algorithms that guarantee that no overflow ever occurs
  • rigorous a posteriori verification of implemented filters against frequency specifications
  • software implementation in C
  • binder with the FloPoCo tool for the generation of FPGA architectures that are computing just right

.. and many others!

Attention: the project is under re-organization. Please, contact me before use.



A  C library for the reliable evaluation of the Worst-Case Peak Gain measure of a LTI filter (most commonly known as the l_1 norm of filter’s impulse response). Given the coefficients of a filter (in the form of the transfer function or as the state-space matrices) and an absolute error bound, the algorithm evaluates the Worst-Case Peak Gain such that the error bound is guaranteed to be respected.

git clone


A C library for the reliable determination of the Fixed-Point Formats for a LTI filter. Computed formats are need to never yield an overflow. The library can also return a bound on the error of the computed output. The output of a filter implemented with the computed formats and a faithful rounding of the intermediate computations is guaranteed to respect this bound.

git clone
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