Inverting CV is easy enough with an op-amp.
Here is a good how-to for an inverting amplifier. Note, you don't need to 'amplify' - you can just invert (ratio Rf and Rin is 1:1 so buy some accurate resistors)
Here is a good link:
The Basic Op Amp Inverter
That should be good to get you started. Also go to wikipedia for 'operational amplifier'.
OP Amp's are great to learn and have zillions of audio applications. You can make gain stages, EQ's and filters, envelope followers, summers, etc...
Quote:
Originally Posted by Beneficial  I reached out to Amos at Moog... real cool guy and super responsive. He said CV inversion or inverted LFO is not a feature currently available in the MP201 BUT it will be available with a firmware update some time next year. In the meantime he said I could just use an external CV inverter. I'm trying to figure out how to make one but I'm really new to doing any kind of electronics work. I was really hoping to find someone or a company who is selling just a simple external CV inverter. |