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The lfOs
What’s an lfO?
LFO is an abbreviation for Low Frequency Oscillator. LFOs are the cause of familiar effects like vibrato
and tremolo, but they can be used in very complex ways (as the presets will attest). Hydrasynth Explorer
has 5 LFOs that can modulate any available parameter through the Mod Matrix. All 5 have identical
parameters, so every description applies equally to all.
lfO features
These LFOs might be more flexible than any you
have encountered. Here are some highlights:
• Delayed onset through the Delay and Fade-in
parameters
• Adjustable phase: start the modulation from
any point in the LFO waveform
• Synchronized or unsynchronized modes
• A wide range of rates, from super slow to
audio
• Independent LFO per voice
• LFOs can modulate themselves, each other,
and/or anything else
• An LFO can be triggered a single time or loop
indefinitely
• Design your own LFO, arpeggio, or mini-
sequence with the Step LFO features
The Vibrato feature is a sixth LFO dedicated to the mod strip. It is not available as a source or
destination in the Mod Matrix. For details, see the
of the Voice module
chapter.
lfOs 1 and 2
Hydrasynth Explorer has pre-wired connections linking LFO 1 to the Filters and LFO 2 to the Amp
module. More LFOs can be routed to these destinations as needed through
.
lfO parameters: page 1
control parameter range
Description
1
Wave
Sine, Triangle, Saw Up, Saw Down, Square,
Pulse27%, Pulse13%, S&H, Noise, Random, Step
Selects LFO waveform. “Step”
is user-defined
2
Rate
BPM = Off: 0.02 to 150.0 Hz
BPM = On: 0, 64’ to 1/64T
Sets duration of LFO cycle
3
Phase
0° - 360°
Defines starting point of LFO
4
Level
0.0 - 128.0
Maximum amplitude of LFO
There’s a quick way to set the LFO rate: While on page 1, hold [SHIFT] and then hold Control
button 2 for the desired period of time. This works with BPM On or Off.
Phase
An LFO doesn’t need to start at a zero-crossing
point. This parameter allows you to specify the
exact point at which it will begin, as measured in
degrees from zero to 360.
Level
You may wonder why this parameter is needed,
when the Mod Matrix allows you to set a level for
each modulation route. That’s a good question
with a great answer.
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