A plucked string instrument using the HMS technique, or Histogram Mapping Synthesis. It is comprised of two files, a small patch and a text file with envelopes (out of histograms).
More info about this patch in the Wiki.
HMS is based on Cellular Automata (CA) which are mathematical/computational models that create moving images. In the context of HMS, these images are analysed by histogram measurements, giving as a result a sequence of histograms. In a nutshell, these histogram sequences are converted into spectrograms which in turn are rendered into sounds. Unlike other CA-based systems, the HMS mapping process is not intuition-based or totally arbitrary; it is based on resemblances discovered between the histogram sequence components and sound spectral components.
https://www.mitpressjournals.org/doi/abs/10.1162/COMJ_a_00267