$ whois pure-data

Pure Data

first released in 1996 · by Miller Puckette

$ guessprog --inspect pure-data

year: 1996
paradigm: dataflow
family: other
memory: automatic gc
binding: dynamic
safety: weak

PURE-DATA(7)

AUTHORS: Miller Puckette
HISTORY: Miller Puckette created Pure Data in the mid-1990s at the University of California, San Diego. Years earlier, at IRCAM in Paris, he had written Max, a visual language for interactive computer music that later became a commercial product. Pure Data reworked the same ideas as free, open-source software: programs are "patches" in which boxes are connected with virtual cables, and audio and control messages flow between them in real time.
USAGE: A niche but long-lived tool in computer music, sound design, interactive installations and media art, much used in universities and by artists. Its engine can also be embedded in apps and games through the libpd library.
SEE ALSO: Pure Data on Wikipedia ↗

$ cat sine.pd

#N canvas 0 50 450 300 12;
#X obj 30 30 osc~ 440;
#X obj 30 70 *~ 0.1;
#X obj 30 110 dac~;
#X text 150 30 a quiet 440 Hz sine \, in stereo;
#X connect 0 0 1 0;
#X connect 1 0 2 0;
#X connect 1 0 2 1;