This is one of the first pd projects I completed, it's a simple synthesizer with three unique oscillators and one modulation for each oscilator, and overall filter. 

Control for the 8 parameters can be accesed using an 8 knob style midi controller such as the MidAir 25 or Oxygen 8.

Simple Synth was mainly an experiment to try out using GriPD for user interfaces, to use this patch you must have PD and GriPD installed, you can get GriPD from: To download the Latest version, Click Here