analogue solutions
Semblance/Telemark
e&oe (c) 5-3-09
11
to the square wave. This will have the affect of thickening up the VCO sound. Extreme
settings of modulation may result in the sound cutting out.
Turn this knob anti-clockwise in increasing amounts to apply frequency modulation
(FM) to VCO2. Use this for vibrato and trill effects on the pitch.
In a central position, there will be no modulation to either PW or Frequency.
MODULATION SOURCE rotary switch
This selects the modulation source for either PWM or FM and is routed to the control
above.
The source options are;
EG2
for pitch sweeps. Good for percussion sounds
EXT2
for sound effects and additional modulation
LFO
for vibrato and trill effects
VCO1 Square wave
for frequency modulation effects
Select the source that you want to use to modulate PWM/FM.
PULSE WIDTH
This control allows manual shaping of the pulse wave output. It alters the pulse width
(duty cycle) of the pulse wave. In a central position a square wave is produced (50% duty
cycle). Try this control and listen to how the tone of the waveform changes. When using
Pulse Width Modulation, it is best to set the Pulse Width control to centre, otherwise the
sound may cut-out.
SYNC
SYNC switch
This switch selects the routings for oscillator sync. The options are;
1>2
VCO2 slaved to VCO1
LFO>2
VCO2 slaved to LFO
OFF
Off/no sync effect
2>1
VCO1 slaved to VCO2
Oscillator sync is where the master signal will reset the waveform of the slave signal
each time the master waveform starts a new cycle.
Try the different settings and listen to their effect. Yo may have to modulate the pitch
of either VCO1 or VCO2 to enhance the effect. There is a balancing act between the pitch
of the two sound sources (usually the 2 VCOs) to get a good effect, once found you'll know
you've found it!
