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ARTURIA – Analog Factory EXPERIENCE 2.5 – USER’S MANUAL 11
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 see why vintage synthesizers have such a typical sound.
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, Analog Factory 2.5 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 filters and are due to the non-linear behavior inherent to 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.