APPLIED ACOUSTICS SYSTEMS ULTRA ANALOG Instrukcja Użytkownika Pobierz pdf (Strona 30)

30 Parameters

Input Level

Output

Level

Asym1

Asym2

Asym3

+ Saturation Level (Sym1)

+ Saturation Threshold (Sym1)

− Saturation Threshold (Asym1)

− Saturation Level (Asym1)

Figure 15: Saturation curves of the resonant ﬁlters. For asymmetrical curves, the saturation level

and threshold are different for positive and negative values of the input level.

one to three for both symmetrical and asymmetrical saturation. These distortion algorithms range

from very low distortion (clean circuit) to very high distortion.

Slave Filter 2

The Filter 2 module can be enslaved to the Filter 1 module. This can be done by clicking the

Slave toggle switch on the Filter 2 module. In this mode, the frequency of the Filter 2 module

follows exactly that of the Filter 1 module. The Frequency knob on the Filter2 module is then used

to adjust the offset frequency between the Filter 1 and Filter 2 modules. When slaved, the cutoff

frequency of Filter 2 module follows exactly that of the Filter 1 module including the effects of the

modulation signals from the keyboard, LFO or envelope generator acting on the Filter 1 module.

Note that the modulation entries on the Filter 2 module are kept active so do not forget to disable

them in order to have the desired effect.

Signal routing to the ﬁlters

The ﬁlter mixers allow one to control how the signal from the different sources, the two oscillators

and the noise source, are routed to the ﬁlters.

The amount of signals received by the ﬁlters from the the VCO1 and VCO2 modules is ad-

justed by the Vco1 and Vco2 knobs. These control simply apply a gain factor to the signal received

from the oscillators. The gain is increased by turning the knobs clockwise from a value of zero

(-inf dB) to a factor of about 3 (10 dB). In the same way, the amount of signal from the noise

source is adjusted using the Noise gain knob.

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APPLIED ACOUSTICS SYSTEMS ULTRA ANALOG Instrukcja Użytkownika Strona 30