Hi, I am currently thinking about building and maybe modifying the circuitbenders drumBs Module.
Therefore, I want to understand it and have some questions. Why does it use the 6V? I guess it is to be able to run from positive only supply, but I am not sure… also I can not see if the opamps are connected to ± 12V or to 12V and 0V (with 6V as “GND “)… if I don’t want the roll function, can I just remove that part? What do I need to change to make it run without the 6V?
So far I think that the upper two lm13600 parts are for filtering the noise, the lower one is for the VCO for the “percussion “ and the rightmost is the overall VCA?
I am happy for more interpretations/explanations also, if you have some stuff on basic drum synthesis, please send
Once I understand this, I would like to make an annotated schematic to help beginners like me to understand!