Fred’s Lab TOORO, User And Service Manual

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6.3 Oscillators 6 PRESET PARAMETERS
6.3.5 FM Amount
The FM feature offers a phase modulation that uses the selected wave as carrier and a
sine wave as modulator. This parameter sets the amount of modulation that is applied to
the carrier.
6.3.6 FM Rate
Sets the frequency of the modulator sine wave for the phase modulation. The frequency
is based on note pitch, using the following ratios:
ˆ
For negative values: freq / (1 - rate / 16)
ˆ
For positive values: freq * rate / 4
6.3.7 Level
Sets the mix level of the oscillator’s output.
6.3.8 Sync
This parameter sets the auto-sync feature. It sounds like hard-sync and works by shorting
and scaling the waveform, while keeping the note original pitch.
A range of 1 to 15
waveform cycles can be set for the sync feature.
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