Vermona PERfourMER MKII - quad analog synthesizer - Manual (Page 9)

dysfunctional with any other selected waveform. Using a sine waveform
to modulate the pulse width results in a sound-thickening-effect,
comparable to a slight detuning. With higher modulation intensities (70
% and higher), the oscillator will temporarily be muted depending on the
LFO speed. Here, there pulse width is so narrow and the sound therefore
partially inaudible. Use the LFO's square and Sample & Hold waveforms
to take advantage oft this effect and create interesting rhythmical sound
breakups.
NOTE The oscillator's pulse width can also be adjusted
using the modulation wheel (See page 7).
Extended Oscillator Functions
Oscillator synchronization
The PerFourMer MKII oscillators in synthesizer channels 2, 3 and 4 can be
synchronized to their prior located counterparts. Here, the master oscillator
will force its frequency upon its coupled partner. Whenever the master
oscillator's waveform reaches a zero-pass-through, it will force the coupled
oscillator to a pass-through, too. With two oscillators running at the same
frequency, this function will eliminate all pulsing and lead to identical
phases.
With the coupled oscillator's frequency set higher than the master oscillator,
oscillator synchronization will lead to the generation of additional harmon-
ics. Especially, a modulation of the coupled oscillator by an envelope gener-
ator or LFO will result in complex harmonic structures.
To activate oscillator synchronization, set the SYNC switch to the left into
VCO position.
For example, set switch to VCO. Here, synthesizer channel 1
will act as master and synchronize synthesizer channel 2. The same is true
for VCO 2 to VCO 3 and VCO 3 to VCO 4. It is of course possible to activate
multiple sync switches at the same time. The dependencies will remain as
described. However, modulation of multiple VCOs will lead to unforeseeable
results and interesting effect sounds.
Owner's Manual VERMONA PERfourMER MKII
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