UDO Super Gemini — Owner’s Manual
39
VCF (Voltage Controlled Filter)
The filter section is integral to the instrument’s unique sonic character
and allows you to shape the sound of the oscillators by modifying the
harmonic content of their signals.
The Super Gemini’s main filter is a 4-pole, 24 dB per octave, analog
resonant low-pass filter that uses a classic polysynth filter design by
Sound Semiconductor (SSI). It is preceded in the signal chain by a 1-pole,
6 dB per octave, analog high-pass filter.
The filter section.
The
low-pass filter
(
LPF) subtracts frequency content above its cutoff
frequency. The frequency content below the cutoff frequency remains
unaffected, meaning the lows will pass through.
The
high-pass filter
(
HPF) subtracts frequency content below its cutoff
frequency. The frequency content above the cutoff frequency remains
unaffected, meaning the highs will pass through. Using the high-pass
filter can be useful for removing ‘muddy’ low ends from pad sounds,
particularly in recording or mixing situations.
The Super Gemini offers numerous options for modulating the low-pass
filter’s cutoff frequency, making the filter section extremely versatile and
suitable for a wide variety of sounds.
Overall, the filter section of the Super Gemini is divided into two: In the left
half you can adjust basic filter settings. The right half of the filter section
contains controls that affect how the low-pass filter is modulated by
different modulation sources and how it responds to key tracking.
Summary of Contents for SUPER GEMINI
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