Ableton/Live/UG/30 MIDI Effect Reference/04 Note Length
- Note Length changes the length of incoming notes, and can trigger notes from Note Off messages instead of Note On.
- Trigger Source chooses Note On or Note Off.
- With Note On, Length sets the base length and Gate scales it: 100% is the full Length, 200% doubles it, 50% halves it. The Time Mode toggles switch Length between milliseconds and synced divisions.
- With Note Off, each note starts when the key is released, so it is delayed by its own held length. Gate and Length then apply. Three more controls appear:
- Release Velocity — the mix of Note On and Note Off velocity used for the output note; leave at 0% if the keyboard sends no release velocity
- Decay Time — how long the velocity takes to fall to zero from the Note On; the value reached at Note Off becomes the output velocity
- Key Scale — positive values make notes below C3 longer and notes above C3 shorter; negative values reverse it
- Latch:
- with Note On, each note plays until the next Note On
- with Note Off, a note triggers when all keys (or the sustain pedal) are released and a new Note Off arrives
- in both cases Gate and Length are disabled; with Note Off, Release Velocity, Decay Time and Key Scale are disabled too