ARTURIA – ANALOG FACTORY S.E. - MANUAL
6
Temporal representation of a “saw tooth” waveform reproduced by TAE
What’s more, the hardware analog oscillators were unstable. In fact, their waveform
varies slightly 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 contributed to the
typical sound of vintage synthesizers.
TAE
®
reproduces the instability of oscillators, bringing a fatter and “bigger” sound.
1.3.3
Direct Filter Circuit Modeling
Due to advances in computer processing power, the ANALOG FACTORY S.E. can now
employ direct filter modeling techniques to achieve unprecedented accuracy in the
emulation of a hardware synthesizer’s filter. By modeling the operation of the
individual hardware components of the filter circuit, the warm nuances synonymous
with analog sounds are recreated. This graph is a frequency domain plot as just a
single example of direct circuit modeling in action; it shows the generation of
harmonics at multiples of the resonant frequency when the filter is in self oscillation
mode, for both one of Arturia’s virtual instruments and what it is emulating. These
harmonics are characteristic of hardware synthesizer’s filters and are due to the non-
linear behavior inherent in its analog circuitry. The harmonics generated add to the
richness and warmth of the sound produced by the filter. As a result of the direct
recreation of this analog circuitry, the same characteristics of the sound are present,
thus giving the user a truly analog sound.
