Ableton/Live/UG/30 MIDI Effect Reference/06 Random
- Random changes the pitch of incoming notes at random.
- Chance is how likely each note is to be changed, like a dry/wet for randomness.
- Choices (1–24) and Interval multiply to give the spread of possible pitches above, below or around the played note. With Chance 50%, Choices 1 and Interval 12, repeated C3s play C3 or C4. With Choices 12 and Interval 1, they play C3 or any note from C#3 to C4. (Both examples use Random mode and Add.)
- Mode:
- Random — pitches in no order
- Alt — steps through the possible pitches in a fixed cycle. Chance 100% always moves to the next pitch; 0% always plays the incoming note. With Choices 12 and Interval 1, repeated C3s climb a semitone at a time to C4 and start over; with Choices 2 and Interval 2, they alternate C3 and D3 — useful for up-bow/down-bow or left/right hand samples.
- Sign:
- Add — only higher pitches
- Sub — only lower pitches
- Bi — either
- LEDs beside Chance flash +, 0 or - for a higher, unchanged or lower note.
- Use Current Scale in the title bar keeps random pitches in the clip's scale. Alt mode with a scale works like a simple, unpredictable step sequencer.