Additionally there is a synthesis method called Oscillator sync. This takes two oscillators & uses one ( the Master ) to reset the
other ( The Slave ) each time it starts a new cycle. The effect is most noticeable when the two oscillators are out of tune as shown
below.
This Sync Effect creates very piercing & metallic sounds & are used a lot as lead sounds. It is worth noting that the Supernova II
Rack does not require 2 oscillators to create this effect. The Sync “Effect” is created by the Analogue Sound Modelling process
without the need for a Sync Oscillator, there is merely a “Sync” parameter that creates the classic Sync Effect. This means that
each of the 3 oscillators in one Supernova II Rack “voice” can be independently Sync’ed as if there were 3 Master & 3 Slave oscil-
lators.
Analogue Sound Modelling technology also enables the creation of some new “Sync” related parameters that are not found on
analogue synthesisers. These are “Key Sync”, “Sync Skew” & “Formant Width”
Normally on an analogue synthesiser, even though the Master & Slave oscillators are detuned relative to each other, they both
track keyboard pitch equally. i.e. if you play notes one octave apart, both the Master & the Slave oscillator will be transposed one
octave. “Key Sync” allows the slave oscillator to have its pitch tracking adjusted independently. This means that the “Sync Effect”
will change as you play different notes up & down the master keyboard.
Sync Skew manipulates the frequency of the “virtual” slave oscillator within one cycle of the master oscillator. The result is that the Sync
Effect seems to have a higher frequency at the end of each cycle with positive modulation & at the start of the cycle with negative modula-
tion. This parameter makes the sync waveform sound even harsher. This is particularly good for aggressive lead sounds.
Positive Skew on a Saw Sync Wave
Normal Saw Sync Waveform
Negative Skew on a Saw Sync Wave
Sync Waveform
Osc1( Master )
Osc2 ( Slave )
Sync Waveform
Osc1( Master )
Osc2 ( Slave )
ABOUT ANALOGUE SYNTHESIS
7
Summary of Contents for Supernova II
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