Modular Diary

Rob Hordijk includes bipolar VCAs1 as part of both the Mini Matrix Node Processors and the Dual Fader and has demonstrated, in his various tutorials on these modules, the ring modulation effects that this makes possible.

Via a recent Reaktorplayer tweet I came across a nice Learning Modular tutorial demonstrating the difference between amplitude and balanced (ring) modulation.

Towards the end of the tutorial there’s also a nice demonstration of the way in which the fundamental of the carrier falls away with ring modulation but remains present with amplitude modulation.

I’ve uploaded some simple demonstrations using my Audulus versions of both the Mini Matrix - Node Proc and the Dual Fader to the Audulus forum.


  1. A bipolar VCA is like a normal VCA when operated with positive control voltage. But when using a negative control voltage, the output will swing back through zero amplitude and the output will be inverted.—Londonmodular 

Modular Diary: Rob Hordijk includes bipolar VCAs as part of both the Mini Matrix Node Proc and the Dual Fader… Via @Reaktorplayer I came across a nice tutorial demonstrating the difference between amplitude and balanced (ring) modulation… rdgr.me/u/1ju1u1m

View on Twitter

Rudiger Meyer is a composer interested in the play between traditional concert music and new media.


Have you published a response to this? (Learn more):

2 Mentions