Ring Modulator

Analog ring modulator

The EMW RING MODULATOR module is a classic analog synthesizer module that is used to produce very interesting effects on waveforms. Two incoming signals (referred to as Modulation and Carrier) are multiplied and the output is the sum and difference of the two frequencies. It can be used in many ways to generate robotic effects on a voice signal or most usually a metallic sound effect on the oscillators waves. The EMW Ring Modulator has a very accurate circuit and can produce very clean ring modulator sounds.

http://www.electronicmusicworks.com/eurorack/ring-modulator.html