Arturia CS-80V - A Better Reproduction of Analog Oscillator Waveforms

ARTURIA – CS-80V – USER’S MANUAL
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1.3.2 A better reproduction of analog oscillator waveforms
The waveforms produced by the oscillators in analog synthesizers are marked by the
presence of a condenser in the circuits. The discharge of the condenser results in a light
bend in the original waveform (notably for saw tooth, triangular and square waveforms).
TAE allows the reproduction of this condenser discharge. Underneath is the analysis of a
waveform from the original CS-80 original, and that of the CS-80V. They are both equally
deformed by the CS-80 low-pass and high—pass filtering.
Temporal representation of a «saw tooth» waveform (deformed by high-pass and low-pass
filtering) of the CS-80V
Temporal representation of a «saw tooth» waveform (deformed by high-pass and low-pass
filtering) reproduced by TAE
What’s more, the original analog oscillators were unstable. In fact, their waveform lightly
varied from one period to another. If we add to this the fact that the starting point for
each period (in Trigger mode) can vary with the temperature and other environmental
conditions, we find one of the characteristics that participated in the typical sound of
vintage synthesizers.
TAE reproduces the instability of oscillators, bringing a fatter and «bigger» sound.