Arturia CS-80V User Manual page 53

In the above image, oscillator2 is synchronized with the first and tuned to with double the tonality.
The resulting waveform is unique in that it cannot be created by standard synthesis techniques
such as layering or filtering.
A ring modulator can be created when an oscillator modulates another oscillator. On
the CS-80V, you can find the «Ring Mod» module above and to the left of the ribbon
controller. By lowering the linear «Modulator» slider/lever while increasing «Speed», the
sound will become more and more rich in harmonics. The result can quickly become
distorted but interesting for inharmonic sounds like special effects or bells for example.
The noise module
The noise signal spectrum has all frequencies at an equal volume level, often referred to
a «white noise». For this reason, the noise module is used to create different noises like
the imitation of wind or special effects. White noise is the richest of noises. Pink noise is
also regularly present on synthesizers. It is less rich in the high frequencies than white
noise.
Also note that the audio output of noise can also be used as a modulation signal
(especially when strongly filtered) to create random cyclic variations.
On pre-cabled synthesizers, the noise module is either integrated into the oscillator (its
audio output being placed to compliment the waveform outputs), or within the mixer
directing the signals towards the filter. On the other hand, on modular synthesizers, it is
an independent module.
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ARTURIA – CS-80V – USER'S MANUAL