pd: pd - Pure Data Computer Music System pd: pd: Pd (aka Pure Data) is a real-time graphical programming environment pd: for audio, video, and graphical processing. It is the third major pd: branch of the family of patcher programming languages known as Max pd: (Max/FTS, ISPW Max, Max/MSP, jMax, etc.) originally developed by pd: Miller Puckette and company at IRCAM. pd: Pd was created to explore ideas of how to further refine the Max pd: paradigm with the core ideas of allowing data to be treated in a more pd: open-ended way and opening it up to applications outside of audio and pd: MIDI, such as graphics and video.