UDO Super Gemini — Owner’s Manual
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Split Mode:
In split mode, the upper and lower layers are mapped either
side of a split point on the keyboard, with the 20 available voices split
evenly between the two. If a layer is set to binaural mode, it will be limited
to five voices. The upper layer is assigned to all keys above and including
the designated split point, while the lower layer is assigned to all keys
below.
Sub-Oscillator: A sub-oscillator is an oscillator with a fixed waveform that
is an octave or more below the frequency of the oscillator to which it is
tied. In the case of the Super Gemini, the enabled sub-oscillator replaces
the audio signal from DDS 2. Its waveform is either a sine or a square
wave pitch-locked one octave below the frequency of DDS 1.
Super Mode:
Super mode is a unique feature that takes advantage of the
Super Gemini’s stereo signal path. In both available super modes, DDS 1
can be dynamically de-phased in the stereo field, resulting in a thick, wide
sound from a single oscillator.
Swing: Swing is a rhythmic variation in which the first and second
consecutive notes of a two-part beat pattern are alternately lengthened
and shortened. The Super Gemini offers five different swing settings when
you engage arpeggiator or sequencer playback, ranging from none to
pronounced. Use swing to make your pattern ‘bounce’.
Sync:
Also known as ‘hard sync’, this function forces DDS 2 to restart its
duty cycle each time DDS 1’s duty cycle begins. By setting the frequency
of DDS 2 to a higher pitch than DDS 1, you can create complex and
harmonically rich timbres, especially if you modulate the pitch of DDS 2,
for instance with an envelope.
Velocity (VEL):
Keyboard velocity allows a sound to respond dynamically
when you hit a key. For example, if velocity controls the behaviour of the
VCA, the softer you play, the quieter the sound will be. Conversely, the
harder you hit the keys, the louder the sound.
Voltage Controlled Amplifier (VCA): A voltage-controlled amplifier
controls volume of a sound. On the Super Gemini, envelope 2 is mapped
to the VCA level by default. You can use this envelope to determine how a
sound’s volume evolves over time.
Voltage Controlled Filter (VCF):
This is the module that gave subtractive
synthesis its name. The voltage-controlled filters are integral to the
Super Gemini’s sonic character, shaping the sound of the oscillators by
subtracting frequencies from their signals.
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