My R&D Projects (Selection)

I have put some of my projects online. In particular, I have made available the following projects on GitHub. Note that this is just a small selection of all of my projects, since I do not yet have made online available all projects.

• RP2040 PIO Emulator
  Software emulation and development environment for PIO programs for the Raspberry Pi Pico. Implemented in Java.

  

• Tipping Points
  An analysis and visualization of the hysteresis effect in tipping points as they appear in climate change. Implemented as Java Swing application. Contribution to the supporting programme of the ZKM exhibition Critical Zones as part of the network initiative “Artists4Future Karlsruhe”.

  

• ml Library
  My own flavour of a minimal TensorFlow-like machine language library implemented in the Java language (work in progress; not yet useful) and beyond.

• VZ200/Z80 Emulator
  A software emulation of the 1980’s VZ200 computer with Z80 CPU, implemented in Java.

  

• Art Frame
  A small C++ / Qt application running a fake particles simulation. Useful for artful manipulation of arbitrary image content.

  

• respektomat
  The Respektomat is an (ELIZA-inspired, but rather simple-minded) implementation of a natural language processor that communicates with a human, always anwering with sentences that somehow refer to the word Respekt, which was the title of the arts exhibition that this application was devised for.

  

• Discrete Spectral Transform (DST)
  A Java library (and small example applications) that implements my discrete spectral transformation (DST). My DST is intended as DFT replacement particularly for situations when fast changes in spectrum do matter and thus may not be neglected.

  

• Maze
  Originally planned as a fully elaborated version of the RaspBerry Pi’s original Maze demo application for the RPI’s sense hat, this project features implicit functions as a convenient and efficient, yet quite unconventional method of specifying the game field’s terrain with complex shapes. Implemented in C++ and Qt.

  

• SpheralPropagation
  A cellular automaton that – in contrast to almost all established cellular automaton – features spreading an initial pattern approximating Euclidian norm rather than sum norm. I originally devised this cellular automaton around 1986, while looking how to approximate creation of perfect circles with cellular automatons, but then lost the original code, and re-invented it in 2007. The automaton’s rather simple set of rules somewhat resemble certain aspects of Maxwell’s laws. Implemented as Java Swing application.

  

• imgsnd
  ImageSound was the (now for long time abandoned) original version of my series of image-to-audio conversion algorithms, devised around 1997, somewhat mimicking graphical notation. It only considered brightness, but ignored hue and saturation. ImageSound was the origin for later projects, among them its immediate successor SoundPaint that featured full color information by using a linear matrix transform for conversion between color space and a three-dimensional space of sound properties, or SoundColumn, which made transition from flat on-screen image scan to cyclic scan of an image projected onto a rotating column.

  

• QuadCopHack
  This project actually resulted from a contest when I was challenged to manually control a 15$-QuadCop, but heavily failed. Instead, I hacked this QuadCop and pimped it with an interface to an Arduino for low-level signal processing and a RaspBerry Pi computer for high-level user control, including fully recording and replaying flight control actions applied to the original flight joystick.

  

• syngraph
  SynGraph is a data aquisition tool for collecting data about graphemic synesthete’s individual mappings of characters (such as letters or digits) to colors. It was devised as a tool for further research into synesthesia. Note that the above mentioned SoundPaint project heavily depends on a useful color to sound mapping, which itself is also an issue in the field of synesthesia.

  

• SoundOntology
  The sound ontology, dating back to as early as 2005, was an attempt to properly model a musician’s potentially complex and heterogenous set of synthesizer equipment in a way to efficiently manage access to all available synthesizer resources, such as instruments, sound patches, voices / timbres, sounds, etc. The ontology is specified using the Web Ontology Language (OWL).

  

For a complete list of my projects currently available on GitHub, see my repositories on GitHub.

Project Contributions (Selection)

I am co-author of / contributor to the following projects:

• GNU LilyPond
  My contributions: ancient notation (neumes, ligatures, fonts), contemporary notation (clusters, ambits, special font glyphs), and more.
  

• JavaParty
  My contributions: transparent threads, and more.
  

• RFC 3253