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60 ARTURIA ARP2600 USER’S MANUAL
5.3 Low frequency oscillator (LFO)
The use or a low frequency oscillator as source of modulation is quite common. It allows
us to make the tone of a sound evolve gently or to create a vibrato or tremolo effect.
Even though three oscillators can be used at very low frequencies, there is a specific
module for this, allowing you to dedicate the oscillators to generation in the audible
domain.
The LFO
Low frequency oscillator
speed (LFO speed)
Sets the clock speed for the low frequency oscillator.
Low frequency oscillator
delay (LFO delay)
Sets the delay of the low frequency oscillator action.
Vibrato depth (vibrato depth)
Sets the depth of the vibrato.
MIDI synchronization
(MIDI sync)
The “Midi Sync” selector switch lets you synchronize
the low frequency oscillator clock with the MIDI tempo.
Triangle output (LFO triangle)
Audio output of the LFO triangle waveform.
Square output (LFO Square)
Audio output of the LFO square waveform.
Sawtooth output (LFO Saw)
Audio output of the LFO sawtooth waveform.
Sine output (LFO Sine)
Audio output of the LFO sinusoid waveform
External vibrato input
(LFO External Vibrato in)
Audio input for external LFO source.
5.4 The ARP sequencer
This module was born of the original ARP sequencer model 1601 (18). It was one of the
most widely used sequencers in the 70’s and early 80’s.
With this module, you will create melodic sequences or step by step variations applied to
synthesizer parameters (a sequence line applied to the opening of the frequency of a
filter can be very effective, for example).
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