K-1 Wavetable VCO
X is V/Oct pitch input
Y is wavetable input
Z is tune ±0.5 octaves
A is wavetable output
B is sub-octave square output or detuned output
Receives MIDI
Parameter Min Max Default
Description
0
0
99
0
Chooses the wavetable.
1
-16 8
0
Octave shift.
2
-32 32
0
Y offset.
3
-4
99
0
Output B option/detune.
4
-1
127 -1
Phase.
This algorithm is a wavetable VCO. See for example
for a brief overview of wavetable
synthesis.
X is the pitch input for the VCO, with a 1V/octave response. The 0V point for the pitch input is C3
(approximately 130.81Hz).
The Z knob/CV provides a tuning control, with a range of approximately ±0.5 octaves.
The Y input controls the lookup point in the wavetable, with a range of ±5V covering the whole
table. Parameter 2 offsets the Y CV, effectively providing a means of manual wave selection.
Output A is the main output of the wavetable VCO.
Output B generates a signal according to parameters 3 and 4. If parameter 4 is -1 (the default), the
output is as follows:
Parameter 3 value
Output B
-4
MIDI gate.
-3
A ±8V square wave one octave below output A
-2
Wavetable VCO one octave below output A
-1
Wavetable VCO one octave above output A
0-99
Wavetable VCO detuned relative to output A;
output A is also detuned in the opposite direction.
If parameter 4 is 0-99, output B is a copy of output A with a fixed phase offset as defined by the
parameter, scaled so 0-128 corresponds to a phase of 0-360°. (So for example if you want
quadrature outputs, set the phase to 32.)
MIDI Input
: MIDI note messages received on the MIDI channel set in the Settings are converted to
a CV which is added to that on input X. The 0V note is 48 (C3). MIDI notes also drive the 'MIDI
gate' output option.
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