Arturia CS-80V User Manual page 52

The sinusoid is the purest of all. It is a unique harmonic and produced a very
«damped» sound. It can be used to reinforce the low frequencies of a bass sound or
as a frequency modulator in order to create harmonics that don't exist in the original
waveforms.
PWM (Pulse Width Modulation) is a setting that allows you to modify the waveform cycle
(or wave length). This can be done manually with the help of a knob «PW» or by
modulation (with an envelope or LFO). This impulse width variation translates to a
spectrum modification, resembling a waveform change.
Unlike many other classic analog synthesizers, the CS-80V lets you change the impulse width not only for the
square waveform but also for the triangle.
This brings a large number of additional sound possibilities to compliment the base signal.
The synchronization of an oscillator with another creates more complex waveforms. If
for example, you synchronize oscillator2 with oscillator1, oscillator2 will restart a new
period every time the first oscillator completes a period, even if oscillator2 has not
completed a complete period (this signifies that it is not tuned to the same tonality!) The
more you tune oscillator2 upwards, the more you will encounter composite waveforms.
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ARTURIA – CS-80V – USER'S MANUAL
The CS-80V waveform