User Manual

4.11. LFOs 1 and 2
The two LFOs (low frequency oscillators) are modulators that can be routed to add
movement to pretty much any parameter on the MatrixBrute. LFO waveforms are near or
below the bottom threshold of our hearing, ranging from about one cycle every 18 seconds
up to 100Hz. They're useful for creating all kinds of sounds, from vibrato to filter sweeps to
pitch changes; their effects range from subtle to wild.
Seven waveforms are available, from left to right: sine, triangle, square, reverse sawtooth,
sawtooth, S&H, and low frequency random.
The pictures of these waveforms show exactly how they behave, for example the square
wave turns on and off abruptly and the triangle ramps up and back down. You can hear this
very clearly at slow rates.
• Wave Selection < and > scroll left and right through the waveforms.
LFO 1 and 2 are the same except for one similar parameter (Phase vs. Delay),
and you patch them into the signal path at the Matrix. See Matrix Section [p.35].
• Phase [LFO 1 only] adjusts where in the LFO's wave cycle it starts relative to the
note trigger, either early or late. The knob has center detent position to starts the
LFO at the beginning.
• Delay [LFO 2 only] delays when LFO starts and also fades it in gradually.
• Rate sets the frequency of the LFO. The light to the left of this knob flashes with
it (until the setting gets too high and the light remains solid).
• Seq-Sync locks the LFO's tempo to the Sequencer See Sequencer Section [p.41],
which in turn can be synced to various sources.
• Retrig cycles through the three choices for how the LFOs respond to note
triggers/retriggers:
◦ Off - The LFO keeps oscillating continuously on its own, independently
of whether notes are triggered; This mode simulates a traditional
analog LFO.
◦ Single - The LFO goes through its wave one time only after a note is
triggered. This is useful for creating an interesting note attack, among
other applications.
◦ Multi - The LFO starts its cycle over every time you trigger a note.
29 Arturia - User Manual MatrixBrute - Operation