An arpeggiator is basically a step sequencer that plays each note of a chord individually in a pattern across one or more octaves.
Enable - Synth/Strings- Enables and disables the Arpeggio section for the Synth or Strings section. Either or both can be selected.
Sync- Engaging the Sync button locks arpeggio timing to master tempo. When engaged, the Rate knob snaps to note values ranging from 1/64th note triplet to 8 beats. Sync mode locks to the tempo in the top toolbar when using the Dreamsynth standalone version or the current project tempo when the plug-in version is used in a DAW.
Rate- Sets the rate of the arpeggiator, from 0.25 to 30 Hz (with Sync disabled).
Range- Selects how many octaves the pattern will play before repeating.
Pattern- Click to open a popup menu defining note play order:
Up- Plays notes in order from lowest to highest.
Down- Plays notes in order from highest to lowest.
Up/Down- Plays notes from lowest to highest then back to lowest again (the highest and lowest note will be play twice in a row)
Key Order- Plays notes in the order they are struck.
Random- Randomly plays notes within the current range.
Hold- When engaged, arpeggios continue to run without having to continuously hold down keys. This allows you to play a series of chords without the arpeggiator stopping as keys are released. Be aware that it will not stop until you disengage the button again. Mapping this to a sustain pedal or button on a MIDI controller can be useful for conveniently toggling this on and off.