Arpeggiator Features - Arturia KEYSTEP PRO User Manual

5.2.4. Arpeggiator Features

The KeyStep Pro's arpeggiators have many features not found on other arpeggiators. To
start with, there are three arpeggiators (on Tracks 2, 3 and 4). Imagine the creative options
at your disposal when you have three arpeggiators in HOLD playing simultaneously and
you are able to transpose each of them individually within its predefined scale — and each
arpeggio is running in a different scale!
When HOLD is active, the arpeggiator will run indefinitely and you can focus on making
changes to the selected arpeggio.
With the exception of Pitch, all main encoders can be used to edit the arpeggio. These edits
are global for that argeggio: you cannot change parameters of individual notes within the
arpeggio. You can, however, make these global edits: change the Gate time, Velocity, Time
Shift and Randomness. To hear the effect of Time Shift you need to have two arpeggios
on HOLD running simultaneously. Randomness will apply random pitch changes to the
arpeggio.
5.2.4.1. Arp Pattern Directions
Just above the keys, from F to B in the lower octave, you'll find a series of blue Arp Pattern
labels: Up, Down, Exclu, Inclu, Rand, Order and Poly. These are used to select how the
arpeggiator will play the notes of the chord you're currently holding down on the keyboard.
To activate one of these functions, hold down the SHIFT button and press the appropriate
key.
• 'Up' will play the notes of your chord from left to right or bottom to top
(pitchwise), depending on your point of view. The order in which you press the
keys does not matter. The arpeggiator will always play the individual notes from
left to right.
• 'Down' plays the notes of your chord from right to left or top to bottom
(pitchwise).
• 'Exclu' plays the chord notes in pendulum motion without repeating the bottom
and top endnotes.
• 'Inclu' plays the chord notes in pendulum motion, including repeat of the two
endnotes.

♪: Exclu and Inclu both play your chord notes in pendulum motion; that is, up and down, then up
and down again repeatedly. The difference is what happens at the extreme ends of the arpeggio. Let's
say you have a four-note chord. In 'Exclu' mode it will be arpeggiated as 1,2,3,4,3,2,1,2 .... In 'Inclu' your
arpeggio will be played as 1,2,3,4,4,3,2,1,1,2 ....
• 'Random' will play the notes of your chord in ever-changing random order.
• 'Order' will play the notes of your chord in exactly the same order as you played
them. You can use this to good effect by repeatedly playing the same chord but
changing the order in which your fingers touch the keyboard.
• 'Poly' will repeat the entire chord as a block chord – all notes at the same time –
instead of arpeggiating its notes in series. The octave of the repeated notes will
depend on the selected Arp Octave parameter and will basically transpose the
whole chord into a different octave then return to the current octave.
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