from the README

        Digital Signal Processing tool for Linux

Mountain Math Software announces the release of version 0.2 of
ObjectProDSP(TM), an object oriented tool for DSP (Digital Signal
Processing) design, development and implementation under version 2
of the GNU General Public License (GPL).

ObjectProDSP is both a tool for DSP and an object framework
for developing interactive scientific and engineering applications.
You may find it of interest even if you do not use DSP.

    o Define and edit a DSP network graphically.

    o Execute the network interactively with plots and listings
      at any point in the net. Tweak parameters, add or
      replace nodes and threads and execute again.

    o Create stand alone code for the network. 

    o Learn DSP by playing with DSP operations and seeing the
      results instantly. ObjectProDSP is a powerful tutorial aid.

    o Use 16 bit integer or single precision floating point arithmetic.

    o Use feedback loops and multiple sample rates in the same network.