Analogue-solutions Nyborg User Manual download pdf (Page 11)

VCO 1& 2

The voltage controlled oscillators (VCOs

1 and 2) produce the raw audio

waveform usually used as the initial

source for sound creation. They provide

cyclic audio waveforms that can be

pitched. VCOs usually receive treatment

from the VCF to turn their basic tones

into pleasant sounds. Both VCOs have

almost identical controls. Both are

described below.

TUNE

Controls pitch adjustment of the VCO.

Use this to tune the VCOs to each other,

and to themselves.

OCTAVE

The VCOs can be transposed up one or

two octaves.

When VCO1’s Octave switch is on the

first setting FREE, then MIDI-CV Pitch

will no longer change the pitch. FREE

(run) allows VCO1 to be used like a LFO

– that is as a CV control source,

unaffected by pitch. Or, it is good for VCO

Sync effects.

When VCO2’s Octave switch is on the

first setting WIDE, then the Tune range of

the TUNE control becomes extremely

wide. It will be harder to set a specific

pitch, but the wide range allows some

great effects when used in conjunction

with other settings.

MODULATION

This controls the amount of modulation to either pulse width or pitch from the

modulation source selected by the SOURCE switch.

Turn this knob clockwise in increasing amounts to apply pulse width modulation

(PWM) to the VCO’s square wave. This will have the effect of thickening up the VCO

sound. Extreme settings of modulation may result in the sound cutting out (which

can be used for creative effect!) Turn this knob anti-clockwise in increasing amounts

to apply frequency modulation (FM) to the VCO.

In a central position, there will be no modulation to either PW or Frequency

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Analogue-solutions Nyborg User Manual Page 11