ARTURIA – Jup-8 V – USER MANUAL
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Temporal representation of a “sawtooth” waveform reproduced by TAE
®
What’s more, the hardware analog oscillators were unstable. In fact, their
waveforms vary 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, resulting in a fatter and “bigger” sound.
1.3.3
Direct Filter Circuit Modeling
Due to advances in computer processing power, TAE® 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.
The following graph shows a single example of direct circuit modeling in action.
The peaks represent the generation of harmonics at multiples of the resonant
frequency when a particular filter is in self oscillation mode. These harmonics are
characteristic of hardware synthesizer filters and are due to the non-linear behavior
inherent to their analog circuitry. Anomalies such as these add to the richness and
warmth of the sound produced by the filter.
But you’ll notice there are two lines on the graph: Those are the superimposed
frequency domain plots for both one of Arturia's virtual instruments and the
hardware filter being emulated. They are practically indistinguishable, both on the
graph and to the human ear. The direct recreation of this analog circuitry causes
the same characteristics of the sound to be present, thus giving the user a truly
analog sound.
