Takes two sounds as its input (e.g. from two oscillators) and takes their difference to create a new sound, normally metallic sounding.

a simple device that can be used to create unusual sounds from an instruments output

Basically an effect where two audio sources or waveforms are multiplied and their sum and difference frequencies are output, usually creating a ringing metallic texture.

A device that accepts and processes two input signals in a particular way. The output signal does not contain any of the original input signal but instead comprises new frequencies based on the sum and difference of the input signals' frequency components. Ring Modulators will be covered in depth later in the series. The best know application of Ring Modulation.

A special type of mixer that accepts two signals as audio inputs and produces their sum and difference tones at its output, but does not pass on the frequencies found in the original signals themselves. See clangorous.