4.5.2. LFO 3
LFO 3 shares some features with LFOs 1 and 2, and has some that are unique and unusual.
•
Curve
changes the LFO shape from logarithmic (100% left) to linear (halfway) to
exponential (100% right).
•
Symmetry
alters the ratio between the rising and falling times of the LFO without
affecting the rate.
•
Rate
sets the LFO frequency. An LED in the right corner of the LFO module flashes
to indicate the rate.
•
Retrig
toggles LFO response between Mono (dark) and Poly>Retrig (lit). See the
previous section for descriptions.
•
Single
means the LFO runs through one cycle and stops. LFO 3 is unipolar when
Single mode is active, and can be used as a simple AD envelope (Attack/Decay).
•
Sync
locks LFO 3 to the Seq / Arp tempo (
), which can
be synced to external sources.
•
x LFO 1
modulates LFO 3 with the output of LFO 1. For example, if LFO 1 is a
square wave, the amplitude of LFO 3 is low while the square wave is low, and its
amplitude is high when the square wave is high. This enables LFO 3 to generate
some very unusual waveforms. Try various rates and waveforms to see what
happens. For the most predictable results, activate the Sync button for both LFOs.
4.5.2.1. More about x LFO 1
When [x LFO 1] and [Single] are active, LFO 1 triggers LFO 3 each time LFO 1 begins its cycle.
When [x LFO 1], [Retrig] and [Single] are active, LFO 3 "freezes" after reaching the end of its
rising portion and enters the falling portion only when the note is released. This turns LFO 3
into an AHR envelope (Attack/Hold/Release).
4.5.3. Unipolar, bipolar
All three LFOs can operate as unipolar modulation sources or bipolar modulation sources.
When set to unipolar the LFOs are rectified, moving from zero to their maximum positive
value and back to zero with each cycle. When they are bipolar they move between their
positive and negative maximums, crossing zero with each cycle.
To access these settings for LFO 1 or LFO 2, hold [Mode] for 1 second. For LFO 3, hold [Retrig]
for 1 second.
4.5.4. LFO sync division
Hold an LFO [Sync] button to reveal the Sync Division menu for that LFO. Each LFO can have
its own setting: Binary, Triplet, or Dotted. These take effect when [Sync] is active for an LFO.
Arturia - User Manual PolyBrute - Voice Architecture
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Summary of Contents for PolyBrute
Page 1: ...USER MANUAL...
