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13. Module reference: Note group
setting on a G2 oscillator module. The PartQuant transforms a Pitch control signal to a new signal value
that will offset the frequency of an oscillator in an exact harmonic interval. The range of the partial
generator is 0 to +/- 64 partials in steps of 1 harmonic. Note that the practical limit for this module is
+/- 32 harmonics. This means that if the input value is greater than +32 units, the output signal will
quantize to the 32nd harmonic control signal value, as that's where the scale stops. In normal use the
PartQuant output is connected to a direct Pitch input (without attenuator knob) of an Oscillator or a
Filter module. Positive input signals will tune an oscillator to a higher harmonic, while negative input
signals will make the oscillator produce 'undertones'.
R
ANGE KNOB
Scales down a full input signal of +64 units to a control value which will produce the overtone shown in
the associated display (the actual harmonic is one higher as the display shows, e.g. when the display shows
+/- 2 it actually means the third harmonic). If the input signal is smaller than +64 units, e.g. +32 units,
then the actual output control signal will produce the harmonic that is half as low as the value shown in
the display. Note that an increase in value of 1 unit of the input signal level corresponds to a step of one
harmonic, provided the Range is set to +63*. Knob settings which exceed +/- 32 partials are shown with
an asterisk, indicating that the practical output limit is exceeded.
As the output is a result of both the Range setting and the value of the input signal, it is recommended
to either use the Range knob with an input setting of +64 units, or instead set the Range knob fully open
to +/-63* and variate the level of the input signal with e.g. a Constant module to force an oscillator or
filter to a fixed harmonic. When the purpose of the module is to arpeggiate an oscillator through its
harmonic series, use a Lfo waveform set to positive only. As the Lfo waveform will in this case vary
between 0 and +64 units the Range knob will set the harmonic arpeggiator range.
Note that when the display shows +1 it will detune to the second harmonic, and when set to +2 detune
to the third harmonic, etc.
I
NPUT
The blue control signal input.
O
UT
Signal: Bipolar.
E
XAMPLE OF A HARMONIC ARPEGGIATOR
In this example a positive only triangle lfo waveform is
quantized to an up down arpeggio that steps from the
fundamental pitch up to the eighth harmonic and down
again.
Page 166
NORD MODULAR G2 V1.4x
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